Frequency-domain cross-layer diversity techniques: an efficient way of coping with lost packets in broadband wireless systems

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Abstract

Modern broadband wireless systems demand increasing quality of service (QoS), requiring small error rates and delays which effectively ensure increased throughput. This article focuses on the handling of lost packets and its influence on spectral efficiency. Two time diversity approaches are considered and compared to cope with lost packets: a low-complexity diversity combining Automatic Repeat reQuest (ARQ) scheme employed in a Time Division Multiple Access (TDMA) architecture; and a Network Diversity Multiple Access (NDMA), which is a multi-packet detection approach able to separate simultaneous transmissions using temporal diversity. The comparison among the approaches focuses on error rate, throughput and delay performances, and takes the implementation complexity in consideration.
Original languageUnknown
Pages (from-to)100-108
JournalIeee Wireless Communications
Volume20
Issue number5
DOIs
Publication statusPublished - 1 Jan 2013

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