1.s:The RAKE receiver performance is significantly degraded in communication over fast fading multipath channels Based on AWT and time and scale resolution of a signal,this paper,via theoretical analysis and computer simulation,explores channel modeling and the performance of the time scale RAKE receiver,and makes contrast with traditional Rake receiver The simulation results indicate that it can work better than traditional Rake receiver in fast fading multi path channels
在高速衰落多径信道中 ,传统的Rake接收机的性能会大大降低。 本文基于自子波变换和时间、尺度分辨率的概念 ,从理论和仿真实验两方面对信道建模和时间 /尺度Rake接收机进行了分析 ,并与传统的Rake接收机进行了比较 ,结果表明时间 /尺度联合分集能有效地克服高速衰落多径信道的影响。
2.The combining method of Pre-rake has been investigated, and OT-MRC based Pre-rake combining method is proposed.
然后，论文研究了Pre-rake合并方法，并给出了基于OT-MRC方法的Pre-rake合并方案。
3.Since WCDMA up-link adopt the RAKE receiver using coherent detection system, the exact and Real-time channel fading estimation of the transmitted signal is needed to realize the phase correction and coherent reception.
由于WCDMA系统上行链路采用的是基于相干解调的RAKE接收方案，故要求对信号在多径衰落信道中所经历的衰落作出准确实时的估计，以便在RAKE接收机中实现相位纠偏和相干接收。
4.Finally,the cross-corre lation functions between m sequence and KM sequence,and the average bit er r or probability (BEP) corresponding to both the sequences and Gold sequence under correlating receiver and RAKE receiver,are compared. The feasibility of KM sequence as spreading codes for CDMA system with RAKE receiver is verified.
最后 ,运用计算机仿真 ,比较了m序列和KM M序列的互相关特性以及在相干接收机和RAKE接收机下 ,这两种序列和Gold序列对应的系统平均误码率 ,从而证实了KM M序列作为扩频码的可行性
5.As is known, the traditional Rake receiver could not eliminate the multi-path interference, the high-level modulation signal also suffers from ISI through multi-path channel which limits the improvement of receiver performance.
由于传统的Rake接收技术无法消除多径干扰,而EV-DO前向链路中的高阶调制信号经过信道后码间干扰尤其严重,限制了Rake接收机性能的进一步提高。
6.Application of Rake Technology to FH Spread Spectrum System
Rake技术在跳频中的运用
7.An antenna array based base station space time receiver structure for wideband code division multiple access (WCDMA) system is proposed. The receiver uses an antenna array beamformer-Rake structure with maximum ratio combining.
提出了宽带码分多址 (WCDMA)系统基站中采用含天线阵的空时接收机结构 ,该接收机采用基于最大比合并的“天线阵波束形成———Rake接收”级联方式 .
8.RAKE Reception Scheme Based on Blind Adaptive Interference Cancellation with Variable Step Size
基于变步长盲自适应干扰抵消的RAKE接收方案
9.Assuming that the channel information is known in the receiver and MMSE criterion is adopted for F-FIR, results show that F-RAKE has about 2-5dB Carrier-Interference-Ratio (CIR) achievement than standard receiver in case of L=3. Meanwhile, F-FIR has about 2-7 dB CIR achievement.
假设接收端已知信道信息,F-FIR采用最小均方误差(MMSE)准则。 结果表明L=3时,F-RAKE比标准接收机的载干比(CIR)高2～5dB,而F-FIR则高出2～7dB;
10.A Study on Smart Antenna-RAKE Receiving and Related Techniques in WCDMA Systems
WCDMA系统智能天线—RAKE接收及相关技术研究
