Title :
Cross-layer combination of cooperative HARQ with AMC in wireless ad-hoc networks
Author :
Shi, Feijin ; Yuan, Dongfeng
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
This paper proposes a cross-layer design which combines adaptive modulation and coding (AMC), cooperative diversity at physical layer (PHY) and hybrid automatic repeat request (HARQ) at data link layer (LL) for wireless ad-hoc networks. First, we provide theoretical analyses of conventional direct transmission scheme and cooperative transmission scheme with AMC and HARQ that include analytical expressions for the packet error rate (PER) and spectral efficiency. Then we propose a novel hybrid transmission scheme which invokes cooperation based on the feedback AMC information. Numerical results demonstrate that the performance of the hybrid transmission scheme is equivalent to the cooperative transmission scheme while its cooperation cost is kept much lower compared with that of the cooperative transmission scheme.
Keywords :
ad hoc networks; adaptive modulation; automatic repeat request; adaptive modulation and coding; cooperative HARQ; cooperative transmission scheme; cross-layer combination; data link layer; hybrid automatic repeat request; packet error rate; spectral efficiency; wireless ad-hoc networks; Ad hoc networks; Automatic repeat request; Cross layer design; Decoding; Diversity reception; Fading; Modulation coding; Physical layer; Protocols; Relays; Adaptive modulation and coding (AMC); cooperative diversity; cross-layer design; hybrid automatic repeat request (HARQ); wireless Ad-hoc network;
Conference_Titel :
Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-2423-8
Electronic_ISBN :
978-1-4244-2424-5
DOI :
10.1109/ICCS.2008.4737315