Description: ：首先介绍了DS--UWB系统的的发射与接收模型，然后分析了利用滑动相关法对信道进行估讣，并巾此给出
了不同RAKE接收机RAKE合成权系数选取方案。对接收机采用最大比(MRC)、最小均方误差(MM SE)及带均衡
器的(MRC)合并系数选取的误码性能进行了仿真和对比。结果表明了带均衡器的MRC—RAKE只用较少的分支
就可以达到接收性能明显优于MMSE—RAKE的程度。尤其在信噪比比较大时。这种优势更加明显。-: First of all, the introduction of the DS UWB system model of the launch and reception, and then analyzed using the sliding correlation method for estimation of channel obituary, and towels, this gives the RAKE receiver RAKE synthesis of different weights to select the program. On the receiver using maximal ratio (MRC), minimum mean square error (MM SE) and band equalizer (MRC) combined coefficient selected BER simulation and comparison. The results show that the equalizer with MRC-RAKE only with fewer branches on the receiver performance can be achieved significantly better than MMSE-RAKE level. Particularly in the relatively large signal to noise ratio. This advantage becomes even more evident. Platform: |
Size: 151552 |
Author:季昀 |
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Description: 实现CDMA系统的RAKE接收,比较最大比合并、等增益合并、、选择合并接收算法的性能，采用3条多径，每条多径之间延迟半个码片，信源输入采用16位WALSH码扩频-Realize RAKE receiver CDMA system to compare maximal-ratio combining, and so gain the merger, and select to receive the combined algorithm, using more than three tracks, each multi-path delay between the half-chip, input source code using 16 WALSH Spread Spectrum Platform: |
Size: 1024 |
Author: |
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Description: In 揚erformance of multi-carrier DS CDMA Systems?we apply a multi-carrier signaling technique to a direct-sequence CDMA system, where a data sequence multiplied by a spreading sequence modulates multiple carriers, rather than a single carrier. The receiver provides a correlator for each carrier, and the outputs of the correlators are combined with a maximal-ratio combiner. This type of signaling has the desirable properties of exhibiting a narrowband interference suppression effect, along with robustness to fading, without requiring the use of either an explicit RAKE structure or an interference suppression filter. Platform: |
Size: 7168 |
Author:ganga |
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Description: In 揚erformance of multi-carrier DS CDMA Systems?we apply a multi-carrier signaling technique to a direct-sequence CDMA system, where a data sequence multiplied by a spreading sequence modulates multiple carriers, rather than a single carrier. The receiver provides a correlator for each carrier, and the outputs of the correlators are combined with a maximal-ratio combiner. This type of signaling has the desirable properties of exhibiting a narrowband interference suppression effect, along with robustness to fading, without requiring the use of either an explicit RAKE structure or an interference suppression filter. Platform: |
Size: 357376 |
Author:ganga |
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Description: 在matlab平台下实现仿真CDMA码分多址通信信号调制信号产生、瑞丽衰落信道以及RAKE接收机的仿真测试程序，能够测议等-In the matlab platform for simulation CDMA code division multiple access communication signals modulated signal generator, Ruili fading channel and the RAKE receiver simulation test program to test proposed, etc. Platform: |
Size: 3072 |
Author:李俊 |
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Description:
此函数用于IS-95前向链路系统的仿真，包括扩
频调制，匹配滤波，RAKE接收等相关通信模块。
仿真环境: 加性高斯白噪声信道.
数据速率 = 9600 KBps
- This function is used in IS-95 forward link system simulation, including the expansion frequency modulation, matched filter, RAKE receiver and other related communication module. Simulation environment: Additive white Gaussian noise channel. Data rate = 9600 KBps Platform: |
Size: 21504 |
Author:SW |
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Description: 实现CDMA的rake接收仿真，检测使用PDI检测-CDMA rake receiver to achieve the simulation, testing using the PDI test Platform: |
Size: 14336 |
Author:takuni86 |
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Description: RAKE技术与CDMA系统相结合，能够带来系统容量和通信质量的极大提
高。根据军事通信中对设备便携性及低功耗的特殊要求，本文研究了一种便携式
基站的收发系统，重点研究了其中的RAKE接收部分。给出了系统的发送方案和
接收方案，对接收机部分所涉及的关键技术和算法，包括数字下变频技术、匹配相关技术、多径搜索技术、信道估计技术、解调及多径合并技术进行了较为详细的分析和说明。在此基础上，运用VHDL语言进行了硬件平台上FPGA部分的功能实现，并对整个系统进行了调试，给出了一些相关的仿真及测试结果。最后对该系统还需进一步研究的问题进行了简要的介绍，对调试过程中的出现的一些问题进行了简单的分析和小结。
-CDMA system with RAKE combining technology, can bring the system capacity and communication quality significantly raised
High. According to military communications equipment portability and low power consumption special requirements, this paper, a portable
The base station transceiver system, which focuses on the RAKE receiving part. Then the system sends the program and
Receiving scheme, the receiver part of the key technologies involved and algorithms, including digital down-conversion technology, matching the relevant technology, multi-path search and channel estimation, demodulation and multi-path merging techniques on a more detailed analysis and explanation. On this basis, the use of VHDL, FPGA hardware platform to achieve some functionality, and debugging the system, given some of the relevant simulation and test results. Finally the system need further study are briefly introduced, and the emergence of the process of debugging some problems in a simple analysis and summar Platform: |
Size: 2499584 |
Author:徐进 |
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Description: A closed-loop power control system
having both fixed-step and adaptive-step power
control algorithms and incorporating with
multitap RAKE receivers was proposed.
Simulations were performed for wide-band radio
channels having path loss, slow fading, and fast
fading. As the measurement of the received power
and the bit energy-to-interfkrence power spectral
density ratio play an important role in a CDMA
power control system, a scheme to estimate these
two parameters was proposed. For a Rayleigh
fading channel and a Rician fading channel
having a K factor of 6dB, a three-tap RAKE
receiver is desirable. Platform: |
Size: 53248 |
Author:nani |
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Description: Rake Receiver implementation in MATLAB. A DS-CDMA system is used to model the mobile environment. Platform: |
Size: 5120 |
Author:Athi |
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Search - RAKE receiver in CDMA