tailieunhanh - Báo cáo hóa học: " The impact of spatial correlation on the statistical properties of the capacity of nakagami-m channels with MRC and EGC"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : The impact of spatial correlation on the statistical properties of the capacity of nakagami-m channels with MRC and EGC | Rafiq et al. EURASIP Journal on Wireless Communications and Networking 2011 2011 116 EURASIP Journal on . http content 2011 1 1i6 Wireless Communications and Networking a SpringerOpen Journal RESEARCH Open Access The impact of spatial correlation on the statistical properties of the capacity of nakagami-m channels with MRC and EGC Gulzaib Rafiq1 Valeri Kontorovich2 and Matthias Patzold1 Abstract In this article we have studied the statistical properties of the instantaneous channel capacitya of spatially correlated Nakagami-m channels for two different diversity combining methods namely maximal ratio combining MRC and equal gain combining EGC . Specifically using the statistical properties of the instantaneous signal-to-noise ratio we have derived the analytical expressions for the probability density function PDF cumulative distribution function CDF level-crossing rate LCR and average duration of fades ADF of the instantaneous channel capacity. The obtained results are studied for different values of the number of diversity branches and for different values of the receiver antennas separation controlling the spatial correlation in the diversity branches. It is observed that an increase in the spatial correlation in the diversity branches of an MRC system increases the variance as well as the LCR of the instantaneous channel capacity while the ADF of the channel capacity decreases. On the other hand when EGC is employed an increase in the spatial correlation decreases the mean channel capacity while the ADF of the instantaneous channel capacity increases. The presented results are very helpful to optimize the design of the receiver of wireless communication systems that employ spatial diversity combining techniques. Moreover provided that the feedback channel is available the transmitter can make use of the information regarding the statistics of the instantaneous channel capacity by choosing the right modulation coding transmission rate .

TÀI LIỆU LIÊN QUAN
TÀI LIỆU MỚI ĐĂNG
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.