channel.hpp

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// toolboxes/comm/include/nk/comm/channel/channel.hpp
//
// AWGN / WGN / BSC channel models, Q-functions, analytical BER, and
// SNR conversions.
 
#pragma once
 
#include <memory_resource>
#include <nk/value/value.hpp>
 
#include <string>
#include <tuple>
 
namespace nk {

 namespace ops { class RngContext; } }
 
namespace nk::comm {

Value awgn(::nk::ops::RngContext &rng, const Value &x, double snr_db, double sigpower_db,
           std::pmr::memory_resource *mr = nullptr);

Value wgn(::nk::ops::RngContext &rng, int m, int n, double p, const std::string &type,
          bool complex_out,
          std::pmr::memory_resource *mr = nullptr);

Value bsc(::nk::ops::RngContext &rng, const Value &x, double p,
          std::pmr::memory_resource *mr = nullptr);

Value qfunc(const Value &x, std::pmr::memory_resource *mr = nullptr);

Value qfuncinv(const Value &p,
               std::pmr::memory_resource *mr = nullptr);

Value marcumq(const Value &a, const Value &b, int m,
              std::pmr::memory_resource *mr = nullptr);

Value berawgn(const Value &EbNo_dB, const std::string &mod, int M,
              std::pmr::memory_resource *mr = nullptr);

Value noisebw(const Value &num, const Value &den, int Nsamp,
              double fs,
              std::pmr::memory_resource *mr = nullptr);

std::tuple<Value, Value>
berconfint(double numErrs, double numBits, double level,
           std::pmr::memory_resource *mr = nullptr);

Value convertSNR(const Value &snr_in,
                 const std::string &in_type,
                 const std::string &out_type,
                 int bits_per_symbol,
                 std::pmr::memory_resource *mr = nullptr);
 

} // namespace nk::comm