Title :
Combining of Forward and Backward Multiple-Symbol Differential Sphere Decoding for Turbo Coded System
Author :
Ching-Chi Lo ; Szu-Lin Su
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
Abstract-It is known that multiple-symbol differential detection can enhance the performance of coded differential phase shift keying (DPSK) systems over a correlated flat fading channel, but have exponential complexity. In this paper, the proposed scheme, Forward/Backward-MSDSD (FB-MSDSD), consisted of MAP-MSDSD, channel estimation and soft demodulation can reduce the complexity by dividing the original detection interval into forward and backward processes. The simulation runs show that compared with SISO MSDSD scheme, the proposed scheme has similar bit error rate but lower complexity.
Keywords :
channel estimation; decoding; differential detection; differential phase shift keying; error statistics; fading channels; turbo codes; DPSK systems; SISO MSDSD scheme; bit error rate; channel estimation; differential phase shift keying systems; exponential complexity; flat fading channel; multiple symbol differential sphere decoding; soft demodulation; turbo coded system; Bit error rate; Channel estimation; Demodulation; Detectors; Differential quadrature phase shift keying; Fading; Iterative decoding; Modulation coding; Space technology; Turbo codes;
Conference_Titel :
Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-2518-1
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2010.5493937
