Title :
Performance of hybrid-ARQ coding schemes over M-QAM equalized mobile radio channels
Author :
Gutiérrez, Fernando ; Valdovinos, Antonio
Author_Institution :
Dept. de Ingenieria Electron. y Comunicaciones, Zaragoza Univ., Spain
Abstract :
In this work, we focus on the performance of ARQ (automatic repeat request) error control strategies over mobile radio channels with M-QAM modulation. This type of error control is used to detect errors, asking for a retransmission when errors are detected. It is seen that single ARQ schemes are not suitable for mobile environments, making it necessary to consider other techniques for equalization in order to cope with ISI (intersymbol interference). Using an equalizer does not improve significantly the performance, so hybrid-ARQ (H-ARQ) schemes must be evaluated. The performance is obtained in terms of throughput versus signal-to-noise ratio
Keywords :
automatic repeat request; channel coding; equalisers; error correction codes; error detection codes; interference suppression; intersymbol interference; mobile radio; quadrature amplitude modulation; telecommunication traffic; ISI; M-QAM; automatic repeat request; equalized channels; error control; error detection; hybrid-ARQ coding; intersymbol interference; mobile radio; performance; retransmission; signal-to-noise ratio; throughput; Automatic repeat request; Delay; Equalizers; Error correction; Error correction codes; Filters; Interference; Land mobile radio; Signal to noise ratio; Throughput;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.800321
