系统工程与电子技术(英文版)
繫統工程與電子技術(英文版)
계통공정여전자기술(영문판)
JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS
2003年
4期
20-24,94
,共6页
左健存%宋文涛%罗汉文%徐友云
左健存%宋文濤%囉漢文%徐友雲
좌건존%송문도%라한문%서우운
adaptive turbo coded modulation%fading channels%spectral efficiency
This paper presents a pragmatic adaptive scheme for TuCM over slowly fading channels. The adaptive scheme employs a single turbo coded modulator composed of a variable-rate turbo encoder and a variable-rate variable-power MQAM for all fading regions, so it has an acceptable complexity to implement. The optimal adaptive TuCM scheme is determined subject to various system constraints. Simulations have been performed to measure the performance of the scheme for different parameters. It is shown that adopting both the turbo coded modulator and the transmit power achieves a performance within 2.5 dB of the fading channel capacity.
