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Collision Performance Improvement in Orthogonal Code Hopping Multiplexing Systems Using Multiple Antennas
다중 안테나를 이용한 직교 부호 도약 다중화 시스템의 성능향상
2011
The Journal of the Korean Institute of Information and Communication Engineering
다중 안테나를 이용한 직교 부호 도약 다중화 시스템의 성능향상
An orthogonal code hopping multiplexing (OCHM) technique has been proposed for accommodating a large number of users with low channel activities than the number of orthogonal codewords through statistical multiplexing in downlink cellular systems. In this paper, a multiple input multiple output (MIMO) antenna based OCHM system is proposed to improve the performance. Each modulated symbol is repeated N times and the N repeated symbols are transmitted simultaneously using N transmit antennas.
doi:10.6109/jkiice.2011.15.10.2100
fatcat:fzw4yj5k4bcuxdngb7t25jr2ka