On Large Deviations of HARQ with Incremental Redundancy over Fading Channels

被引：18
|
作者：
Choi, Jinho [1 ]
机构：
[1] Swansea Univ, Coll Engn, Swansea SA2 8PP, W Glam, Wales
来源：
IEEE COMMUNICATIONS LETTERS | 2012年 / 16卷 / 06期
关键词：
HARQ; outage probability; large deviations; HYBRID-ARQ; WIRELESS LINKS; AVERAGE RATE; PERFORMANCE; MODULATION; CAPACITY; SERVICE; QUALITY; POWER;
D O I：
10.1109/LCOMM.2012.042312.120454
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The hybrid automatic repeat request (HARQ) protocol with incremental redundancy (IR) or HARQ-IR protocol is an effective means to transmit signals over unreliable channels. It can achieve ergodic capacity with limited feedback of channel state information (CSI) from a receiver. In this paper, using large deviations, we derive the quality of service (QoS) exponent of the HARQ-IR protocol over fading channels. This QoS exponent allows us to compare the throughput of HARQ-IR and the effective capacity of an adaptive transmission system with a buffer that requires instantaneous CSI. It is shown that the HARQ-IR protocol can be more effective when a higher QoS exponent is desired.
引用
收藏
页码：913 / 916
页数：4
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