Title :
Multiple CFOs Compensation and BER Analysis for Cooperative Communication Systems
Author :
Zhang, Yanyan ; Zhang, Jianhua
Author_Institution :
Wireless Technol. Innovation Inst., Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In cooperative communication systems, multiple carrier frequency offsets (MCFO) appear due to the different accuracy of the nodes´ oscillators and Doppler spreads, which drastically degrades the performance of space-frequency block coded (SFBC) cooperative systems. In this paper, a MCFO compensation algorithm including modified SFBC decoder, minimum Euclidean distance decision criterion and interference reconstructing eliminator is proposed. Besides, the bit error ratio (BER) lower bound of cooperative communication systems with MCFO is theoretically derived. From the simulations, the correctness of our theoretical analysis can be validated, and it is also proved that the proposed compensation algorithm achieves good BER performance with a large range of MCFO.
Keywords :
block codes; diversity reception; error statistics; space-time codes; wireless channels; BER analysis; BER performance; Doppler spreads; MCFO compensation algorithm; SFBC decoder; bit error ratio; cooperative communication systems; interference reconstructing eliminator; minimum Euclidean distance decision criterion; multiple CFOs compensation; multiple carrier frequency offsets; node oscillators; space-frequency block coded cooperative systems; Analytical models; Bit error rate; Communication systems; Cooperative systems; Decoding; Degradation; Euclidean distance; Frequency; Interference elimination; Oscillators;
Conference_Titel :
Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE
Conference_Location :
Budapest
Print_ISBN :
978-1-4244-2947-9
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2009.4917818
