Title :
Decision Feedback Differential Detection with Postdetection Diversity Reception for DPSK/OFDM Systems
Author :
Lee, Jeong Hoon ; Choi, Jin Yong ; Seo, Jong Soo
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul
Abstract :
This paper presents a scheme of decision feedback differential detection (DF-DD) with postdetection diversity reception for differential phase shift keying (DPSK)/orthogonal frequency division multiplexing (OFDM) systems. The DF-DD overcomes the degradation of bit error rate (BER) performance caused by conventional DD. The DF-DD with postdetection diversity reception can combat the inter-carrier interference (ICI) in OFDM systems and achieve better BER performance as compared to DF-DD without postdetection diversity reception. In this correspondence, we combined two techniques, DF-DD and postdetection diversity reception, in DPSK/OFDM systems. Simulation results show that the DF-DD with postdetection diversity reception can provide a reliable BER performance comparable to conventional DD without postdetection diversity reception.
Keywords :
OFDM modulation; differential phase shift keying; diversity reception; error statistics; intercarrier interference; DPSK-OFDM systems; bit error rate; decision feedback differential detection; differential phase shift keying; inter-carrier interference; orthogonal frequency division multiplexing; postdetection diversity reception; Bit error rate; Degradation; Differential phase shift keying; Differential quadrature phase shift keying; Diversity reception; Feedback; Interference; OFDM; Phase detection; Phase frequency detector; Decision feedback differential detection (DF-DD); differential phase shift keying (DPSK); orthogonal frequency division multiplexing (OFDM); postdetection diversity reception;
Conference_Titel :
Advanced Communication Technology, The 9th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-131-8
DOI :
10.1109/ICACT.2007.358741
