다중 사용자 OFDM 시스템을 위한 효율적이고 빠른 비트 배정 알고리즘

An Efficient and Fast Bit Allocation Algorithm for Multiuser OFDM Systems

Orthogonal frequency division multiplexing(OFDM) is one of the most promising technique for next generation wireless broadband communication systems. In this paper, we propose a new bit allocation algorithm in multiuser OFDM. The proposed algorithm is derived from the geometric progression of the additional transmit power of subcarriers and the arithmetic-geometric means inequality. The simulation shows that this algorithm has similar performance to the conventional adaptive bit allocation algorithm and lower computational complexity than the existing algorithms.