Title :
Mismatched Detection of Turbo Block DFE Using Parallel Concatenated Scheme
Author :
Li Qiang ; Li, Shaoqian
Author_Institution :
Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Tech. of China, Chengdu
Abstract :
A turbo-type scheme that uses parallel concatenation and turbo block decision feedback equalization (TBDFE) is proposed for transmission over linear intersymbol interference channels. The scheme can offer significant improvement in performance. The performance gain is even higher when the detector uses an imperfect channel estimate. In the case of SNR mismatch, both TBDFE and the conventional iterative block-based DFE (IBDFE) algorithms are more sensitive to SNR overestimation than underestimation.
Keywords :
channel estimation; concatenated codes; decision feedback equalisers; intersymbol interference; turbo codes; wireless channels; SNR mismatch; imperfect channel estimate; iterative block-based DFE algorithms; linear intersymbol interference channels; mismatched detection; parallel concatenated scheme; parallel concatenation; turbo block DFE; turbo block decision feedback equalization; AWGN; Concatenated codes; Decision feedback equalizers; Detectors; Filters; Hydrogen; Intersymbol interference; Iterative algorithms; Performance gain; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.170
