Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/46836
標題: Frequency-hopping codes for multimedia services in mobile telecommunications
作者: Kwong, W.C.
楊谷章
Yang, G.C.
關鍵字: frequency-hopping code-division multiple-access
mobile
telecommunications
multimedia services
multiwavelength optical
orthogonal code
time-division multiple-access
division multiple-access
systems
construction
networks
fiber
sequences
channels
cdma
期刊/報告no:: Ieee Transactions on Vehicular Technology, Volume 48, Issue 6, Page(s) 1906-1915.
摘要: In this paper, "multlength" frequency-hopping (FH) codes are constructed by modifying the generalized prime codes (GPC's). The new codes have asymptotically optimal cardinality as well as zero autocorrelation sidelobes and cross-correlation functions of no greater than one. They are suitable for the integration of multimedia services (e.g., data, voice, image, and video) with different quality-of-service (QoS) requirements and signaling rates in future telecommunication systems, such as third-generation cellular mobile radio systems, where rate and service quality are dynamically matched to users' needs through the assignment of different-length FH patterns. The use of the new codes in multirate multimedia systems with FH code division multiple access (FH-CDMA) is illustrated. Providing frequency and time diversities, the applications of the GPC's to an FH time-division multiple-access (FH-TDMA) and FH/time-hopping TDMA (FH/TH-TDMA) system are also discussed. Finally, the use of the codes in optical CDMA systems as multiwavelength optical orthogonal codes is studied.
URI: http://hdl.handle.net/11455/46836
ISSN: 0018-9545
文章連結: http://dx.doi.org/10.1109/25.806783
Appears in Collections:通訊工程研究所

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