Title :
A Novel Block-DFE Algorithm for DTMB Standard
Author :
Huang, Qiuyuan ; Xu, Yan ; Long, Biqi
Author_Institution :
Sch. of Inf. Eng., Wuhan Univ. of Technol., Wuhan
Abstract :
Equalization is a technique often used in wireless communication applications. In this paper a novel block decision feedback equalizer (block-DFE) algorithm suitable for Chinese digital terrestrial television multimedia broadcasting (DTMB) standard is proposed. Our block-DFE algorithm is based on QR factorization, which is used to solve the least-squares detection problem. We adopt Givens rotations to perform the QR decomposition. The performance of traditional decision feedback equalization (DFE) algorithm, overlap and add frequency-domain equalization (OLA-FDE) algorithm, and block-DFE algorithm under different SNRs is compared by MATLAB simulation, which proves the advantages of block-DFE algorithm.
Keywords :
digital television; equalisers; least squares approximations; matrix decomposition; multimedia communication; Chinese digital terrestrial television multimedia broadcasting standard; DTMB standard; QR factorization; block decision feedback equalizer; block-DFE algorithm; decision feedback equalization; frequency-domain equalization; least-squares detection problem; Communication standards; Computational complexity; Decision feedback equalizers; HDTV; Hardware; Intersymbol interference; Mobile communication; Mobile computing; OFDM; Time domain analysis; DTMB; Givens rotation; QR factorization; block decision feedback equalization;
Conference_Titel :
Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on
Conference_Location :
Yunnan
Print_ISBN :
978-0-7695-3501-2
DOI :
10.1109/CMC.2009.98
