標題: DECODING METRICS FOR SLOW FREQUENCY-HOPPED DPSK SYSTEMS
作者: SU, YT
電信工程研究所
友訊交大聯合研發中心
Institute of Communications Engineering
D Link NCTU Joint Res Ctr
關鍵字: RADIOCOMMUNICATION;FREQUENCY HOPPING;SPREAD SPECTRUM;NOISE JAMMING;PHASE SHIFT KEYING
公開日期: 1-十月-1992
摘要: A variety of soft-decision decoding metrics for slow frequency-hopped, differential phase shift keyed spread-spectrum systems are studied. The computational cut-off rates in the presence of partial band noise jamming for these metrics are analysed. The usefulness of various degrees of side information, the effectiveness of limiting and quantisation when side information is not available, and the importance of a judicious choice of the quantisation step size are demonstrated. Monte-Carlo type simulations for the system encoded by Odenwalder's (7, 1/2) code are conducted, the resulting BERs reveal that close approximations can be attained by estimations calculated from a known closed-form formula.
URI: http://hdl.handle.net/11536/3280
ISSN: 0956-3776
期刊: IEE PROCEEDINGS-I COMMUNICATIONS SPEECH AND VISION
Volume: 139
Issue: 5
起始頁: 525
結束頁: 532
顯示於類別:期刊論文


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