Open AccessMaximal‐ratio combining detection in massive multiple‐input multiple‐output systems with accurate probability distribution function
Author(s) -
Chumchewkul Ditsapon,
Tsimenidis Charalampos
Publication year - 2021
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12138
Subject(s) - phase shift keying , quadrature amplitude modulation , probability density function , bit error rate , orthogonal frequency division multiplexing , moment generating function , algorithm , mathematics , quadrature (astronomy) , electronic engineering , qam , computer science , statistics , engineering , decoding methods , estimator
This letter derives the probability distribution function (PDF) of received symbols for orthogonal frequency‐division multiplexing (OFDM) based massive multiple‐input, multiple‐output (MMIMO) systems, which uses maximal‐ratio combining (MRC) detection. The effects of noise and interferences are evaluated through random variables, and the PDF is then derived from their joint probability and characteristic functions. The bit error rate (BER) using Binary and Quadrature Phase Shift Keying (BPSK, QPSK), and M ‐ary Quadrature Amplitude Modulation (QAM) waveforms is then analyzed by using this PDF. Simulation and analytical results confirm that the derived equations provided accurate PDF and BER, and therefore, can be used efficiently to evaluate performance of OFDM‐MMIMO systems.