Open AccessCoverage analysis of downlink cellular orthogonal frequency‐division multiple‐access networks using moment generating functions
Author(s) -
Son Jaeyong,
Seol Changkyu,
Cheun Kyungwhoon,
Yang Kyeongcheol
Publication year - 2016
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2015.0102
Subject(s) - telecommunications link , decoding methods , upper and lower bounds , algorithm , moment generating function , computer science , qam , mathematics , quadrature amplitude modulation , topology (electrical circuits) , bit error rate , telecommunications , statistics , probability density function , combinatorics , mathematical analysis
In this study, the coverage of downlink cellular orthogonal frequency‐division multiple‐access networks transmitting one quadrature‐amplitude modulation symbol per hop is analysed. The coverage probability is first defined by using an upper bound on the bit error rate (BER) of a bit‐interleaved coded modulation system. Moreover then, the moment generating functions of the legacy Gaussian and Laplacian metrics (LMs) for soft‐decision decoding of an employed error‐correcting code are derived for computing the upper bound on the BER and the corresponding coverage probability of the networks. Numerical results demonstrate that due to the impulsive nature of the inter‐cell interference for moderate‐to‐small cell loads, the networks using the LM for soft‐decision decoding significantly outperform those employing the legacy Gaussian metric in terms of the achievable cell radius and the amount of the average transmit power reduction.