Coverage analysis of downlink cellular orthogonal frequency‐division multiple‐access networks using moment generating functions
| Autor: | Changkyu Seol, Kyungwhoon Cheun, Kyeongcheol Yang, Jaeyong Son |
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| Rok vydání: | 2016 |
| Předmět: |
Theoretical computer science
Orthogonal frequency-division multiple access 05 social sciences Coverage probability 050801 communication & media studies 020206 networking & telecommunications Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Moment-generating function Upper and lower bounds Computer Science Applications 0508 media and communications Telecommunications link 0202 electrical engineering electronic engineering information engineering Bit error rate Electrical and Electronic Engineering Algorithm Quadrature amplitude modulation Decoding methods Computer Science::Information Theory Mathematics |
| Zdroj: | IET Communications. 10:24-33 |
| ISSN: | 1751-8636 |
| DOI: | 10.1049/iet-com.2015.0102 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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