出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Wireless communication now has been focus to increase data rate and high performance. Themulti carrier on multi-hop communication system using relay's diversity technique which issupported by a reliable coding is a system that may give high performance.This research is developing a model of multi carrier CDMA on multi hop communicationsystem with diversity technique which is using Alamouti codes in Rayleigh fading channel. ByAlamouti research, Space Time Block Code (STBC) for MIMO system can perform high qualitysignal at the receiver in the Rayleigh fading channel and the noisy system. In this research,MIMO by STBC is applied to single antenna system (Distributed-STBC/DSTBC) with multicarrier CDMA on multi hop wireless communication system (relay diversity) which is able toreduce the complexity of the system but the system performance even can be maintained andimproved.MC CDMA on multi hop wireless communication system with 2 hops is performing much betterthan Single Input Single Output (SISO) system (1 hop system). Power needed for 1 hop system tohave the same quality as 2 hops system to reach BER 10-3 is 12 dB. And multi hop system needsorthogonal symbol to send from relay than original symbol to reach better performance. 12.5dB power up is needed for multi hop system which sent same symbol as transmitter than relaysystem which sent orthogonal symbol.
关键词：Alamouti; MIMO; multi carier; CDMA; MC CDMA; STBC; Distributed-STBC/DSTBC; diversity;Rayleigh fading; multi-hop system; SISO; relay’s diversity
