电子学报Issue(9)：1699-1704,6.DOI:10.3969/j.issn.0372-2112.2014.09.006
单载波频域均衡系统中一种简化的 IBDFE 算法
A Simplification of IBDFE Algorithm in Single Carrier Frequency Domain Equalization System
顾晨阳 1杨瑞 1盛文钦 1李丁山1
作者信息
- 1. 武汉船舶通信研究所，湖北武汉430205
- 折叠
摘要
Abstract
In single carrier frequency domain equalization (SC-FDE)systems ,linear equalization is simple and practical ,but it does not do well in noise and inter-symbol interference (ISI )suppression .Therefore ,nonlinear feedback and iteration mechanism is needed to improve the performance .Iterative block decision feedback equalization (IBDFE )is an effective nonlinear algorithm with a disadvantage of high computational complexity .In view of this ,a simplified algorithm is derived on the basis of IBDFE structure us-ing the minimum mean square error (MMSE )criterion .Then the mean square error (MSE )of the simplified algorithm and the existing low complexity algorithm is analyzed and compared .Three algorithms are simulated considering two kinds of wireless multipath fad-ing channels .Results show that the proposed algorithm is convergent after two iterations under the given channels .Simulations also validate the conclusions of MSE analysis .Computational complexity comparison indicates that the proposed algorithm decreases the bit error rate (BER )performance ,but it can efficiently reduce the amount of calculation .关键词
单载波频域均衡/判决反馈均衡/迭代块判决反馈均衡/最小均方误差Key words
single carrier frequency domain equalization (SC-FDE)/decision feedback equalization/iterative block decision feedback equalization (IBDFE )/minimum mean square error分类
信息技术与安全科学引用本文复制引用
顾晨阳,杨瑞,盛文钦,李丁山..单载波频域均衡系统中一种简化的 IBDFE 算法[J].电子学报,2014,(9):1699-1704,6.
