Abstract:A transmit diversity scheme, called Labelled Delay Space-Time Spreading (LDSTS) is proposed for communication systems in underwater acoustic(UWA) channels with propagation delays and multipath spreading. The scheme eliminates the propagation delays and multipath delays by using the channel probe signals, transmitted in sequence and Rake receivers. The signals are transmitted from transducers in sequence enable the scheme is practice for applications to UWA communication system. The signal models are proposed and BER performances of the scheme with FSK and PSK modulation are analyzed. Simulations results show that the scheme realizes complement transmit diversity gains in multipath UWA channel.
张 歆; 张小蓟. 水声多径信道中的标识延迟空时扩展发射分集[J]. 电子与信息学报, 2009, 31(8): 2024-2027 .
Zhang Xin; Zhang Xiao-ji. A Transmitter Diversity Scheme Based on Labelled Delay Space Time Spreading in Underwater Acoustic Communication Systems. , 2009, 31(8): 2024-2027 .