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Overview of ARQ and HARQ in Beyond 3G Systems |
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Written by zeezom
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Monday, 31 January 2011 14:05 |
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Overview of ARQ and HARQ in Beyond 3G Systems
Abstract—In this paper, we present a review of automatic repeat
request (ARQ) and hybrid ARQ (HARQ) mechanisms
implemented or proposed in beyond 3rd generation (B3G)
wireless systems based on OFDMA. In particular, we will focus
on part of the IEEE 802.16 standard family (IEEE 802.16-2005,
IEEE 802.16m) and on 3GPP Long Term Evolution (LTE). In the
second part of this overview, some performance curves show how
HARQ can help in reducing performance degradation in mobility context.
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