© The Institution of Engineering and Technology
Frequency-domain contention (FDC) is a high-efficient distributed wireless access mechanism for wireless local area networks. However, it is very hard to achieve frequency synchronisation among multiple senders and multiple receivers, and further eliminate carrier frequency offset (CFO). As a result, when multiple users perform FDC simultaneously, CFO will cause serious miss detection and false alarm in identifying subcarriers, frequently leading to contention collisions and failures. Focusing on the integer carrier frequency offset, first theoretically analyse the impact of these contention collisions and failures on the throughput of FDC. Extensive simulations verify that the theoretical model is very accurate.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.1018
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content/journals/10.1049/el.2017.1018
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Impact of integer carrier frequency offset on the performance of frequency-domain contention