2011/02/27 by Indu Shakya, Shakya, Indu, Falah H. Ali +3
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Communication Technologies #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Information Theory (cs.IT) #Wireless Communication Security Techniques
paper · pdf · doi:10.48550/arxiv.1102.5535
openalex publication_date 2011/02/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
User cooperation is a well-known approach to achieve diversity without\nmultiple antennas, however at the cost of inevitable loss of rate mostly due to\nthe need of additional channels for relaying. A new collaborative diversity\nscheme is proposed here for multiple access fading channels to attain full rate\nwith near maximum diversity. This is achieved by allowing two users and their\ncorresponding relays to transmit/forward data on the same channel by exploiting\nunique spatial-signatures of their fading channels. The base-station jointly\ndetects the co-channel users' data using maximum-likelihood search algorithm\nover small set of possible data combinations. Full data rate with significant\ndiversity gain near to two-antenna Alamouti scheme is shown.\n