| CDMA移动通信中的判决反馈多用户信号检测器 |
| |
| 引用本文： | 聂景楠 程时昕. CDMA移动通信中的判决反馈多用户信号检测器[J]. 通信学报, 1996, 17(2): 39-45 |
| |
| 作者姓名： | 聂景楠 程时昕 |
| |
| 作者单位： | 东南大学 |
| |
| 摘 要： | 本文推导了一种具有线性计算复杂度的同步ＤＳ—ＣＤＭＡ系统多用户检测算法，由此形成的判决反馈检测器在性能上优于解相关检测器，与两级多用户检测器的性能相当，而实现起来则更为简单。数值结果表明，当接收到的干扰信号能量比有用信号能量高４ｄＢ以上时，判决反馈检测器的性能将接近单用户系统的性能，因而该检测器可有效地克服ＣＤＭＡ移动通信中的远近影响。
|
| 关 键 词： | 码分多址，多用户信号检测，判决反馈，远近效应 |
Decision-Feedback Multiuser Signal Detector for CDMA Mobile Communications |
| |
| Nie Jingnan,Cheng Shixin. Decision-Feedback Multiuser Signal Detector for CDMA Mobile Communications[J]. Journal on Communications, 1996, 17(2): 39-45 |
| |
| Authors: | Nie Jingnan Cheng Shixin |
| |
| Abstract: | A multiuser detection algorithm with linear computational complexity for synchronous DS/CDMA system is derived in this paper.Performance of the decision-feedback detector based on the algorithm is superior to that of the decorrelator,and approximately the same to that of the two-stage detector while the DF detector is simpler to implement.The numerical results show that performance of the DF detector tends to that of single user system when the received interference energy is 4 dB higher than that of useful signal.Therefore the DF detector can effectively overcome the near-far effects in CDMA mobile communication systems. |
| |
| Keywords: | CDMA multiuser signal detection decision-feedback near-far effect |
| 本文献已被 CNKI 维普 等数据库收录！ |
