Earticle

초록

영어

A cross-layer design is developed which combines the Adaptive Modulation and Coding (AMC) at the physical layer and truncated Automatic Repeat Request (ARQ) at the data link layer to maximize the spectral efficiency under prescribed error performance constraints. Depending on the error correcting capability of the truncated ARQ, which depends on the maximum allowable number of retransmissions, we design AMC transmission modes, with each mode consisting of a specific modulation and FEC code pair as in IEEE 802.16 standard, that guarantee the required performance. Numerical results reveal that retransmissions at the data link layer relieve stringent error control requirements at the physical layer and thereby enable considerable spectral efficiency gain. This gain is provided by the maximum number of retransmissions per packet which equals the diversity order. The improvement on spectral efficiency decreases when the number of retransmissions increases, suggest that a small number of retransmissions offers a desirable delay-throughput tradeoff, in practice. The performance analysis is done in terms of outage probability also.

목차

Abstract
 1. Introduction
 2. System Model
 3. Cross-Layer Design
  3.1 Performance requirement at the Physical Layer
  3.2. AMC Design at the Physical Layer
 4. Performance Analysis
 5. Numerical Results
 6. Conclusion
 References

키워드

저자

• Mrs.G.Indumathi [ Assistant Professor Department of ECE Mepco Schlenk Engineering College Sivakasi, Tamilnadu, India ]
• Dr.K.Murugesan [ Bharathiyar Institute of Engineering for Women Attur,Tamilnadu, India ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605