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<a href="digital__clock__recovery__mm__cc_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* -*- c++ -*- */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright 2004,2011 Free Software Foundation, Inc.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This file is part of GNU Radio</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * any later version.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * along with GNU Radio; see the file COPYING. If not, write to</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street,</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * Boston, MA 02110-1301, USA.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#ifndef INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_CC_H</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_CC_H</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <<a class="code" href="digital__api_8h.html">digital_api.h</a>></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <<a class="code" href="gr__block_8h.html">gr_block.h</a>></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <<a class="code" href="gr__complex_8h.html">gr_complex.h</a>></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="gr__math_8h.html">gr_math.h</a>></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">class </span><a class="code" href="classgri__mmse__fir__interpolator__cc.html" title="Compute intermediate samples between signal samples x(k*Ts)This implements a Mininum Mean Squared Err...">gri_mmse_fir_interpolator_cc</a>;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">class </span><a class="code" href="classdigital__clock__recovery__mm__cc.html" title="Mueller and Müller (M&M) based clock recovery block with complex input, complex output.This implements the Mueller and Müller (M&M) discrete-time error-tracking synchronizer.">digital_clock_recovery_mm_cc</a>;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr<digital_clock_recovery_mm_cc></a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">digital_clock_recovery_mm_cc_sptr</a>;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// public constructor</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <a class="code" href="digital__api_8h.html#ae14969f36ec69051c4b2f13a0db7e9ba">DIGITAL_API</a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">digital_clock_recovery_mm_cc_sptr</a> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <a class="code" href="digital__clock__recovery__mm__cc_8h.html#a1486d68d441ab33b6ab44b7ac8080ea3">digital_make_clock_recovery_mm_cc</a> (<span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a5aa2464738752643018e672c7fbd45e9">omega</a>, <span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a15380c164a2cf5b80a8865f7e7588bf8">gain_omega</a>,</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a854a6d13e4d08044d0fc743094fa7529">mu</a>, <span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a67727112bbe37394b301a8d42f34a074">gain_mu</a>,</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">float</span> omega_relative_limit=0.001);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">/*!</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * \brief Mueller and Müller (M&M) based clock recovery block with complex input, complex output.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * \ingroup sync_blk</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * \ingroup digital</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * This implements the Mueller and Müller (M&M) discrete-time</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * error-tracking synchronizer.</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * The complex version here is based on:</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> * Modified Mueller and Muller clock recovery circuit</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * Based:</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * G. R. Danesfahani, T.G. Jeans, "Optimisation of modified Mueller</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * and Muller algorithm," Electronics Letters, Vol. 31, no. 13, 22</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * June 1995, pp. 1032 - 1033.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html"> 57</a></span> <span class="keyword">class </span><a class="code" href="digital__api_8h.html#ae14969f36ec69051c4b2f13a0db7e9ba">DIGITAL_API</a> <a class="code" href="classdigital__clock__recovery__mm__cc.html" title="Mueller and Müller (M&M) based clock recovery block with complex input, complex output.This implements the Mueller and Müller (M&M) discrete-time error-tracking synchronizer.">digital_clock_recovery_mm_cc</a> : <span class="keyword">public</span> <a class="code" href="classgr__block.html" title="The abstract base class for all 'terminal' processing blocks.A signal processing flow is constructed ...">gr_block</a></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  ~<a class="code" href="classdigital__clock__recovery__mm__cc.html" title="Mueller and Müller (M&M) based clock recovery block with complex input, complex output.This implements the Mueller and Müller (M&M) discrete-time error-tracking synchronizer.">digital_clock_recovery_mm_cc</a> ();</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordtype">void</span> <a class="code" href="classgr__block.html#aa1f2518b5c97126bb015adb9e2027f4a" title="Estimate input requirements given output request.">forecast</a>(<span class="keywordtype">int</span> noutput_items, <a class="code" href="gr__types_8h.html#ab02d0a829d67d39e3ac3163016d3a8be">gr_vector_int</a> &ninput_items_required);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">int</span> <a class="code" href="classgr__block.html#adf59080d10f322e3816b7ac8f7cb2a7c" title="compute output items from input items">general_work</a> (<span class="keywordtype">int</span> noutput_items,</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="gr__types_8h.html#ab02d0a829d67d39e3ac3163016d3a8be">gr_vector_int</a> &ninput_items,</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="gr__types_8h.html#a9852a3d906d823cb70eb9c29e7f2a43d">gr_vector_const_void_star</a> &input_items,</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="gr__types_8h.html#acd3f499576e769966ea44554b359d949">gr_vector_void_star</a> &output_items);</div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a854a6d13e4d08044d0fc743094fa7529"> 66</a></span>  <span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a854a6d13e4d08044d0fc743094fa7529">mu</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_mu;}</div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a5aa2464738752643018e672c7fbd45e9"> 67</a></span>  <span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a5aa2464738752643018e672c7fbd45e9">omega</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_omega;}</div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a67727112bbe37394b301a8d42f34a074"> 68</a></span>  <span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a67727112bbe37394b301a8d42f34a074">gain_mu</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_gain_mu;}</div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a15380c164a2cf5b80a8865f7e7588bf8"> 69</a></span>  <span class="keywordtype">float</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a15380c164a2cf5b80a8865f7e7588bf8">gain_omega</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_gain_omega;}</div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a746cfbbee3bc2dcf1f4277594b6c0681"> 70</a></span>  <span class="keywordtype">void</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a746cfbbee3bc2dcf1f4277594b6c0681">set_verbose</a> (<span class="keywordtype">bool</span> verbose) { d_verbose = verbose; }</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a970079b5877a1cff530161cb61628df5"> 72</a></span>  <span class="keywordtype">void</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a970079b5877a1cff530161cb61628df5">set_gain_mu</a> (<span class="keywordtype">float</span> gain_mu) { d_gain_mu = gain_mu; }</div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#ad22cbf38103a68a28c1cb32610c4baff"> 73</a></span>  <span class="keywordtype">void</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#ad22cbf38103a68a28c1cb32610c4baff">set_gain_omega</a> (<span class="keywordtype">float</span> gain_omega) { d_gain_omega = gain_omega; }</div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a740393e6f8182e36b34691d64487d1fe"> 74</a></span>  <span class="keywordtype">void</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a740393e6f8182e36b34691d64487d1fe">set_mu</a> (<span class="keywordtype">float</span> mu) { d_mu = mu; }</div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="classdigital__clock__recovery__mm__cc.html#a999400257571ae9157cb4b6ace7aa7cb"> 75</a></span>  <span class="keywordtype">void</span> <a class="code" href="classdigital__clock__recovery__mm__cc.html#a999400257571ae9157cb4b6ace7aa7cb">set_omega</a> (<span class="keywordtype">float</span> omega) { </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  d_omega = omega;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  d_min_omega = omega*(1.0 - d_omega_relative_limit);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  d_max_omega = omega*(1.0 + d_omega_relative_limit);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  d_omega_mid = 0.5*(d_min_omega+d_max_omega);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="classdigital__clock__recovery__mm__cc.html" title="Mueller and Müller (M&M) based clock recovery block with complex input, complex output.This implements the Mueller and Müller (M&M) discrete-time error-tracking synchronizer.">digital_clock_recovery_mm_cc</a> (<span class="keywordtype">float</span> omega, <span class="keywordtype">float</span> gain_omega,</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">float</span> mu, <span class="keywordtype">float</span> gain_mu,</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">float</span> omega_relative_limi);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">float</span> d_mu;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">float</span> d_omega;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordtype">float</span> d_gain_omega;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">float</span> d_min_omega; <span class="comment">// minimum allowed omega</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">float</span> d_max_omega; <span class="comment">// maximum allowed omeg</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">float</span> d_omega_relative_limit; <span class="comment">// used to compute min and max omega</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordtype">float</span> d_omega_mid;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">float</span> d_gain_mu;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> d_last_sample;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="classgri__mmse__fir__interpolator__cc.html" title="Compute intermediate samples between signal samples x(k*Ts)This implements a Mininum Mean Squared Err...">gri_mmse_fir_interpolator_cc</a> *d_interp;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordtype">bool</span> d_verbose;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> d_p_2T;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> d_p_1T;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> d_p_0T;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> d_c_2T;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> d_c_1T;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> d_c_0T;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> slicer_0deg (<a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> sample);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> slicer_45deg (<a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> sample);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">friend</span> <a class="code" href="digital__api_8h.html#ae14969f36ec69051c4b2f13a0db7e9ba">DIGITAL_API</a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">digital_clock_recovery_mm_cc_sptr</a></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="digital__clock__recovery__mm__cc_8h.html#a1486d68d441ab33b6ab44b7ac8080ea3">digital_make_clock_recovery_mm_cc</a> (<span class="keywordtype">float</span> omega, <span class="keywordtype">float</span> gain_omega,</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">float</span> mu, <span class="keywordtype">float</span> gain_mu, </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">float</span> omega_relative_limit);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> };</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor">#endif</span></div>
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