SIGNAL CONSTELLATIONS DESIGN FOR DIFFERENTIAL UNITARY SPACE-TIME IN MIMO-OFDM SYSTEM OVER FREQUENCY-SELECTIVE FADING CHANNELS  

作　　者：Chen Jing Zhu Qi 

机构地区：[1]College of Communication ＆ Information Engineering, Nanjing University of Posts ＆ Telecommunications, Nanjing 210003, China

出　　处：《Journal of Electronics(China)》2008年第3期300-304,共5页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.60772062);the National Basic Research Pro-gram of China (No.2007CB310607);the Natural Science Research Fund of Jiangsu University (No. 05 KJB 510090)

摘　　要：In this paper, the design of signal constellations parameters is studied for Differential Unitary Space-Time Modulation (DUSTM) based on the design criterion of maximizing the diversity product. Further, noninteger searching method for the signal constellation parameters design is proposed in order to get better codes. Experimental results show that under the different Doppler spread and data transmission rate, the proposed design performs better than the previous design using integer parameters in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system over frequency-selective fading channels.In this paper, the design of signal constellations parameters is studied for Differential Unitary Space-Time Modulation （DUSTM） based on the design criterion of maximizing the diversity product. Further, noninteger searching method for the signal constellation parameters design is proposed in order to get better codes. Experimental results show that under the different Doppler spread and data transmission rate, the proposed design performs better than the previous design using integer parameters in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing （MIMO-OFDM） system over frequency-selective fading channels.

关 键 词：Differential Unitary Space-Time Modulation （DUSTM） Diversity product Signal constellations Multiple Input Multiple Output （MIMO） Orthogonal Frequency Division Mutiplexing （OFDM） 

分 类 号：TN929.5[电子电信—通信与信息系统]