1. Multi User Performance On Mc Cdma Single Relay Cooperative System By Distributed Stbc In Rayleigh Fading Channel
- Author
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Gelar Budiman, Rina Pudji Astuti, and Ali Muayyadi
- Subjects
Computer Networks and Communications ,business.industry ,Computer science ,Code division multiple access ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,MIMO ,Data_CODINGANDINFORMATIONTHEORY ,Communications system ,Multi-user ,law.invention ,Computer Science::Performance ,Space–time block code ,Hardware and Architecture ,Relay ,law ,Computer Science::Networking and Internet Architecture ,Electronic engineering ,Wireless ,business ,Computer Science::Information Theory ,Rayleigh fading ,Computer network - Abstract
Increasing data rate and high performance is the target focus of wireless communication. The multi carrier on multi-hop communication system using relay's diversity technique which is supported by a reliable coding is a system that may give high performance. This research is developing a model of multi user and two scheme of multi carrier CDMA on multi hop communication system with diversity technique which is using Alamouti codes in Rayleigh fading channel. By Alamouti research, Space Time Block Code (STBC) for MIMO system can perform high quality signal 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 multi carrier CDMA on multi hop wireless communication system (relay diversity) which is able to improve the received signal performance. MC DS CDMA on multi hop wireless communication system with 2 hops is better performing than MC CDMA on multi user without Multi User Detector. To reach BER 10-3 multi hop system with MC CDMA needs more power 5 dB than MC DS CDMA at 5 users using Alamouti scheme for symbol transmission at the relay.
- Published
- 2015
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