Efficient adaptive loading algorithm with simplified bandwidth optimization method for OFDM systems

被引：0

作者：

Liu, KM ^{[1
]}

Yin, FF ^{[1
]}

Wang, WB ^{[1
]}

Liu, Y ^{[1
]}

机构：

[1] BUPT, Ctr Wireless Commun, Beijing, Peoples R China

来源：

GLOBECOM '05: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-6: DISCOVERY PAST AND FUTURE | 2005年

关键词：

multicarrier modulation; MCM; OFDM; loading algorithm; bandwidth optimization; constant data rate;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

A crucial aspect for adaptive bit and power loading algorithms is to determine all usable subchannels. In this paper, a simplified bandwidth optimization method is proposed to search for all usable subchannels for loading algorithms which aim at the minimization of power consumption with constraint of constant data rate and target bit error rate (BER). Based on this method, an efficient loading algorithm is developed. Simulation results show that the proposed algorithm can achieve the same bit allocation results to that of the well-known Hughes-Hartogs and Fischer et al. algorithm. This algorithm is appropriate for OFDM systems in time-varying channels due to its low complexity.

引用

页码：2793 / 2797

页数：5

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