Linda Meylani, Iswahyudi Hidayat, A. Kurniawan, M. S. Arifianto
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引用次数: 1
Abstract
Low density signature orthogonal frequency division multiplexing (LDS-OFDM) is a promising multiple access that increases spectrum utilization. In LDS-OFDM, each subcarrier can be accessed by more than one user, however, it is limited to dc users. Each user spreads its symbols in a number of dv subcarriers. In this paper, we propose power allocation for LDS-OFDM in underlay cognitive radio to increase throughput for each secondary user (SU) by manage the power weighting of each user in every subcarrier. The simulation results confirm that our proposed algorithm can increase the throughput of SU compare to equal power weighting. Grouping on allocation resource will affect the outage probability and SU’s throughput.
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