Title :
On efficiency of link adaptation mechanisms in H/ARQ systems
Author :
Pilipovic, Milos ; Samardzija, Dragan
Author_Institution :
Comput. & Control Dept., Univ. of Novi Sad, Novi Sad, Serbia
Abstract :
In this study we analyze the synergy effects among ARQ and Hybrid ARQ with rate-adaptive mechanisms. We present several coding and decoding schemes and link adaptation techniques for rate-adaptive transmission, designed to combat noise, and we discuss their performance. We describe approaches for searching and selecting the best modulation and coding scheme (MCS) based on channel quality information (CQI). Hybrid ARQ using convolutional and punctured convolutional codes is used with variable re-transmission packet size and code rate according to CQI. Attractive simulation results are issued and they may be used as a basis for performance trade-off.
Keywords :
AWGN; Automatic repeat request; Bit error rate; Convolutional codes; Cyclic redundancy check; Decoding; Error correction; Forward error correction; Modulation coding; Quality of service;
Conference_Titel :
MIPRO, 2010 Proceedings of the 33rd International Convention
Conference_Location :
Opatija, Croatia
Print_ISBN :
978-1-4244-7763-0
