Mobile - Wireless Communications White Papers
Adaptive Modulation Based MC-CDMA Systems for 4G Wireless Consumer Applications
Overview In this paper, various adaptive modulation based coded MC-CDMA systems have been studied in Rayleigh fast fading environment for the 4G wireless based consumer applications. The digital modulation schemes considered are M-ary QAM, M-ary PSK, M-ary CPM, M-ary MHPM, and GMSK with varying bit-duration-bandwidth product. The results of the adaptive systems clearly indicate that the dynamic switching of the modulation format can enhance the system capacity per given bandwidth substantially without sacrificing the expected BER performance. With adaptive modulation, the bit rate per given bandwidth is no longer a constant as in the case of fixed modulation based systems but varies dynamically according to the varying channel conditions.
| Publisher | Institute of Electrical and Electronics Engineers | File Format | |
|---|---|---|---|
| Date Published | January 2004 | Downloads | 4 |
| Format | White Papers | ||
| Topics | |||
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