Classes | |
| class | itpp::EXIT |
| EXtrinsic Information Transfer (EXIT) chart. More... | |
| class | itpp::Multilateration |
| Multilateration class for 3D indoor localization More... | |
| class | itpp::STC |
| Space Time block Codes (STC) class. More... | |
Functions | |
| bmat | itpp::graycode (int m) |
| Generate Gray code of blocklength m. | |
| int | itpp::hamming_distance (const bvec &a, const bvec &b) |
| Calculate the Hamming distance between a and b. | |
| int | itpp::weight (const bvec &a) |
| Calculate the Hamming weight of a. | |
| vec | itpp::waterfilling (const vec &alpha, double P) |
| Compute the water-filling solution. | |
| ITPP_EXPORT bmat itpp::graycode | ( | int | m | ) |
Generate Gray code of blocklength m.
The codes are contained as binary codewords {0,1} in the rows of the returned matrix. See also the gray() function in math/scalfunc.h.
Definition at line 39 of file commfunc.cpp.
References itpp::concat(), itpp::graycode(), itpp::ones_b(), itpp::reverse(), itpp::to_bmat(), and itpp::zeros_b().
Referenced by itpp::graycode(), itpp::ND_UPAM::set_M(), itpp::ND_UPSK::set_M(), itpp::ND_UQAM::set_M(), itpp::PAM::set_M(), itpp::PAM_c::set_M(), itpp::PSK::set_M(), and itpp::QAM::set_M().
| ITPP_EXPORT int itpp::hamming_distance | ( | const bvec & | a, |
| const bvec & | b ) |
Calculate the Hamming distance between a and b.
Definition at line 59 of file commfunc.cpp.
References it_assert_debug.
| ITPP_EXPORT int itpp::weight | ( | const bvec & | a | ) |
Calculate the Hamming weight of a.
Definition at line 71 of file commfunc.cpp.
Referenced by itpp::Extended_Golay::decode().
| ITPP_EXPORT vec itpp::waterfilling | ( | const vec & | alpha, |
| double | P ) |
Compute the water-filling solution.
This function computes the solution of the water-filling problem
![\[
\max_{p_0,...,p_{n-1}} \sum_{i=0}^{n-1} \log\left(1+p_i\alpha_i\right)
\]](form_123.png)
subject to
![\[
\sum_{i=0}^{n-1} p_i \le P
\]](form_124.png)
| alpha | vector of ![]() |
| P | power constraint |

The computational complexity of the method is 
Definition at line 82 of file commfunc.cpp.
References it_assert, and itpp::length().
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