Link adaptation to channel interference using multi-rate source and channel coding for CDMA mobile communications
نویسندگان
چکیده
This paper investigates the bene ts of link adaptation according to the propagation conditions using multi-rate vocoders and channel coders. A multi-rate source and channel coding (MRC) system trades-o the source codec bit rate against channel codec bit rate according to the prevailing channel conditions. MRC systems continuously recon gure transmission resources to optimally combat channel degradations and hence, maintain a reasonable quality of service even in marginal channel conditions. The aim is to maintain a satisfactory level of speech quality over a wide range of channel conditions with minimum resources. This paper shows the bene t of MRC system particularly in crowded cells of high channel interference.
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تاریخ انتشار 1997