In this letter we investigate the performance of slow adaptive M -ary quadrature amplitude modu- lation with coherent multichannel reception. We consider a slow adaptive modulation (SAM) technique which adapts the constellation size to the slow variation of the channel due, for example, to shadowing. The proposed SAM technique is more practical than conventional adaptive modulation techniques that require the adaptation to fast fading variations. Our results show that SAM technique can provide substantial increase in throughput while maintaining an acceptable low bit error outage.
Multi-channel reception for slow adaptive M-QAM in fading channels
CONTI, Andrea;
2004
Abstract
In this letter we investigate the performance of slow adaptive M -ary quadrature amplitude modu- lation with coherent multichannel reception. We consider a slow adaptive modulation (SAM) technique which adapts the constellation size to the slow variation of the channel due, for example, to shadowing. The proposed SAM technique is more practical than conventional adaptive modulation techniques that require the adaptation to fast fading variations. Our results show that SAM technique can provide substantial increase in throughput while maintaining an acceptable low bit error outage.File in questo prodotto:
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