Hybrid ARQ with Rate Adaptation in Multiband OFDM UWB Systems

被引：0
|
作者：
Wang, Cheng-Xiang [1 ]
Ryu, Heung-Gyoon [2 ]
Chen, Hsiao-Hwa [4 ]
He, Yejun [3 ]
机构：
[1] Heriot Watt Univ, Sch EPS, Joint Res Inst Signal & Image Proc, Edinburgh, Midlothian, Scotland
[2] Natl Cheng Kung Univ, Dept Engn Sci, Tainan, Taiwan
[3] Shenzhen Univ, Coll Informat Engn, Shenzhen, Peoples R China
[4] Natl Cheng Kung Univ, Dept Engn Sci, Taipei, Taiwan
来源：
2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-8 | 2009年
关键词：
MODULATION; CODES;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we propose a cross-layer design (CLD) scheme combining rate adaptation and four types of hybrid automatic repeat request (HARQ) for multiband orthogonal frequency division multiplexing (MB-OFDM) ultra wideband (UWB) systems following the ECMA-368 standard. The time varying property is incorporated into standard UWB channel models for the purpose of investigating rate adaptation. To accurately accommodate fast time-varying channel conditions, we propose to embed the selected rate information into the acknowledgement (ACK) frames. It is shown that the proposed CLD scheme combining rate adaptation and HARQ can provide higher throughput than the HARQ-only schemes. Among the four types of HARQ schemes, HARQ Type-III has the best throughput performance while Type I has the worst.
引用
收藏
页码：4087 / +
页数：2
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