| OFDM系统中多用户组合调制自适应比特分配算法 |
| |
| 引用本文： | 李精华,孙山林. OFDM系统中多用户组合调制自适应比特分配算法[J]. 无线通信技术, 2006, 15(2): 18-22 |
| |
| 作者姓名： | 李精华 孙山林 |
| |
| 作者单位： | 1. 天津大学电子信息工程学院,天津,300017;桂林航天工业高等专科学校电子工程系,桂林,541004
2. 天津大学电子信息工程学院,天津,300017 |
| |
| 摘 要： | 本文针对多用户OFDM系统,将其信道分配和比特分配相结合,提出了更优的OFDM多用户组合调制自适应分配算法(M CABA)。该算法在系统总的传输速率一定和满足传输质量的基础上,与现有的OFDM自适应算法相比,可以获得更优的功率、信噪比性能和频率效应。并对该算法进行了理论分析和M atlab6.5.1系统仿真。
|
| 关 键 词： | 正交频分多路复用 自适应算法 信道分配 比特分配 |
| 文章编号： | 1003-8329(2006)02-0018-05 |
| 修稿时间： | 2005-12-15 |
A Multi-user Combined Modulation Adaptive Bit Allocation in OFDM System |
| |
| LI Jing-hua,SUN Shan-lin. A Multi-user Combined Modulation Adaptive Bit Allocation in OFDM System[J]. Wireless Communication Technology, 2006, 15(2): 18-22 |
| |
| Authors: | LI Jing-hua SUN Shan-lin |
| |
| Abstract: | Contraposition multi-user of OFDM system,combining the wireless channel and bit allocations,this paper proposes a novel multi-user combined-modulation algorithm of adaptive OFDM,which can remarkably reduce the total power needed by the system and improve the adaptive efficiency of fequency resource with the assurance of transmission Qos.Simulated in the adaptive OFDM system with Matlab6.5.1,the performance of the algorithm is compared with present and traditional algorithms,and the results verify the distinct improvements of perfomances both in power and SNR as well. |
| |
| Keywords: | orthogonal frequency division multiplexing(OFDM) adaptive algorithm channel allocation bit allocation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
