Adaptive Equalization Algorithm in Symbolic Level Based on LMS Algorithm

被引：0
|
作者：
Yang J. [1 ]
Tu H. [1 ]
Wang Y.-X. [1 ]
机构：
[1] School of Information and Electronics, Beijing Institute of Technology, Beijing
来源：
| 2017年 / Beijing Institute of Technology卷 / 37期
关键词：
Code division multiple access; Multipath interference; Spread spectrum communication; Symbol equalization;
D O I：
10.15918/j.tbit1001-0645.2017.07.018
中图分类号：
学科分类号：
摘要：
In the CDMA systems with short spreading codes, multipath interference will seriously affect the performance of receivers. Especially when the multipath delay is long, interference will spread to disturb successive symbols and cause serious interference between users and symbols. A symbolic level adaptive equalization algorithm was proposed to improve the throughput of single iteration of equalization, almost without changing the bit error rate of receivers and computation complexity. The results of simulation and hardware test show that, the new algorithm effectively suppresses the inter-user interference and inter-symbol interference caused by multipath fading, and obviously improves the throughput of one single iteration equalization, and alleviates the constraint of delay to the convergence speed, which makes it much easier for engineering application. © 2017, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.
引用
收藏
页码：753 / 757
页数：4
相关论文
共 6 条
  • [1] Philip S., Margetts Adam R., Adaptive chip-rate equalization of downlink multirate wideband CDMA, Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, pp. 1228-1232, (2002)
  • [2] Hardouin E., Laot C., Improved bit error probability estimationfor DS-CDMA downlink equalizer-based receivers with small spreading factors, 10th International Conference on Telecommunications, pp. 877-881, (2003)
  • [3] Frederik P., Marc M., Engels M., Et al., Pilot-aided adaptive chip equalizer receiver for interference suppression in DS-CDMA forward link, Vehicular Technology Conference, pp. 303-308, (2000)
  • [4] Vysotski Y., Frank C.D., Umehwar U., Et al., Adaptive equalization in spread spectrum communication systems
  • [5] Margetts Adam R., Keel Alton S., Hybrid rake/equalizer receiver for spread spectrum communication systems
  • [6] Fang Z., Xu Q., Wang Z., A CDMA receiver based on equalization in sysbol level, Journal of Circuits and Systems, 13, 2, pp. 115-118, (2008)
1