11#ifndef INCLUDED_DIGITAL_ADAPTIVE_ALGORITHM_LMS_H
12#define INCLUDED_DIGITAL_ADAPTIVE_ALGORITHM_LMS_H
16#include <volk/volk_alloc.hh>
24 typedef std::shared_ptr<adaptive_algorithm_lms>
sptr;
27 const float d_step_size;
36 static sptr make(constellation_sptr cons,
float step_size)
47 unsigned int num_taps)
override
49 volk::vector<gr_complex> prod_vector(num_taps), conj_vector(num_taps);
53 volk_32fc_conjugate_32fc(conj_vector.data(), in, num_taps);
54#if VOLK_VERSION >= 030100
55 volk_32fc_s32fc_multiply2_32fc(
56 prod_vector.data(), conj_vector.data(), &err_x_mu, num_taps);
58 volk_32fc_s32fc_multiply_32fc(
59 prod_vector.data(), conj_vector.data(), err_x_mu, num_taps);
61 volk_32fc_x2_add_32fc(
taps,
taps, prod_vector.data(), num_taps);
69 return conj(conj(tap) + d_step_size * u_n * conj(err));
Definition adaptive_algorithm_lms.h:22
std::shared_ptr< adaptive_algorithm_lms > sptr
Definition adaptive_algorithm_lms.h:24
adaptive_algorithm_lms(constellation_sptr cons, float step_size)
Definition adaptive_algorithm_lms.h:30
gr_complex update_tap(const gr_complex tap, const gr_complex &u_n, const gr_complex err, const gr_complex decision) override
Definition adaptive_algorithm_lms.h:64
static sptr make(constellation_sptr cons, float step_size)
Definition adaptive_algorithm_lms.h:36
~adaptive_algorithm_lms() override
Definition adaptive_algorithm_lms.h:41
void initialize_taps(std::vector< gr_complex > &taps) override
Definition adaptive_algorithm_lms.h:72
void update_taps(gr_complex *taps, const gr_complex *in, const gr_complex error, const gr_complex decision, unsigned int num_taps) override
Definition adaptive_algorithm_lms.h:43
Definition adaptive_algorithm.h:30
#define DIGITAL_API
Definition gr-digital/include/gnuradio/digital/api.h:18
std::complex< float > gr_complex
Definition gr_complex.h:15
static constexpr float taps[NSTEPS+1][NTAPS]
Definition interpolator_taps.h:9
adaptive_algorithm_t
Definition adaptive_algorithm.h:23
GNU Radio logging wrapper.
Definition basic_block.h:29