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 |