DocumentCode :
2304444
Title :
A simplified equalization method for asynchronous cooperative relay systems
Author :
Jiang, Yanxiang ; Xiao, Jun ; You, Xiaohu
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
fYear :
2012
fDate :
1-1 April 2012
Firstpage :
258
Lastpage :
262
Abstract :
In this paper, asynchronous cooperative relay systems based on distributed linear convolutional space-time codes are investigated. By utilizing the banded Toeplitz property of the equivalent channel matrix, a block minimum mean square error (MMSE) equalization method employing the Trench algorithm to solve the Toeplitz linear equations is proposed, which avoids the high order matrix inversion operation in the traditional MMSE equalization method. The computation of the equalization operation is further simplified greatly by converting the high order banded Toeplitz linear equations to the low order ones. Simulation results show that satisfactory system performance can be achieved by employing non-minimum-order non-trace-orthogonal generator polynomials.
Keywords :
convolutional codes; cooperative communication; equalisers; least mean squares methods; linear codes; relays; space-time codes; Toeplitz linear equations; Trench algorithm; asynchronous cooperative relay systems; banded Toeplitz property; block minimum mean square error; distributed linear convolutional space-time codes; equivalent channel matrix; non-minimum-order non-trace-orthogonal generator polynomials; simplified equalization method; Bit error rate; Convolutional codes; Generators; Polynomials; Relays; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference Workshops (WCNCW), 2012 IEEE
Conference_Location :
Paris
Print_ISBN :
978-1-4673-0681-2
Type :
conf
DOI :
10.1109/WCNCW.2012.6215502
Filename :
6215502
Link To Document :
بازگشت