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Description: Title: MMSE Receiver for DS-SS in AWGN Channel
Author: Panson Tantikovit
Summary: An adaptive receiver for DS-SS systems
MATLAB Release: R12.1
Required Products: Communications Toolbox,Signal Processing Blockset
Description: This is an adaptive receiver for a direct-sequence spread spectrum (DS-SS) system over an AWGN channel. The adaptive receiver block is modified from the LMS adaptive filter block in DSP Blockset. For DS-SS signal reception, the adaptive filter needs to have multi-rate operation. The input sample rate is equal to chip rate and the output is at symbol rate. Two rates are related by PG, processing gain.
-Title: MMSE Receiver for DS-SS in AWGN Channel Author: Panson Tantikovit Summary: An adaptive receiver for DS-SS systems MATLAB Release: R12.1 Required Products: Communications Toolbox,Signal Processing Blockset Description: This is an adaptive receiver for a direct-sequence spread spectrum (DS-SS) system over an AWGN channel. The adaptive receiver block is modified from the LMS adaptive filter block in DSP Blockset. For DS-SS signal reception, the adaptive filter needs to have multi-rate operation. The input sample rate is equal to chip rate and the output is at symbol rate. Two rates are related by PG, processing gain.
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Size: 19456 |
Author: zzp |
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Description: Matlab源程序：MMSE Receiver for DS-SS in AWGN Channel！希望对大家有帮助。-Matlab source : MMSE Receiver for DS-SS in AWGN Channel! We want to help.
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Size: 8192 |
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Description: 解相关及MMSE和传统检测器比较的仿真程序包括有远近，无远近，有躁，无躁。-decorrelation and MMSE and traditional Detectors comparison simulation program including length, no distance, a rash, without rashness.
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Size: 8192 |
Author: 武刚 |
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Description: CDMA以及MC-CDMA中的多用户联合检测
MMSE算法以及ZF(迫零)算法-CDMA and MC-CDMA in multi-user MMSE joint detection algorithm, as well as ZF (zero forcing) algorithm
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Size: 5120 |
Author: 何超 |
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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.
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Size: 151552 |
Author: 季昀 |
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Description: CDMA中传统多用户检测和MMSE多用户检测比较（前向和反向链路）-CDMA traditional MMSE multi-user detection and multi-user detection comparison (forward and reverse link)
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Size: 131072 |
Author: 孔政敏 |
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Description: 在DS-spread spectrum系统中,噪声为加性高斯白噪声,传统单用户检测,线性解相关多用户检测和最小均方误差多用户检测的性能比较-In DS-spread spectrum system, the noise is additive white Gaussian noise, the traditional single-user detection, the linear decorrelating multiuser detection and MMSE Multiuser Detection Performance Comparison
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Size: 3072 |
Author: sunxu |
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Description: 本程序为CDMA系统中基于MMSE的多用户检测技术，供有相关人士下载-This procedure for the CDMA system based on the MMSE multi-user detection techniques for those who have related downloads
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Size: 1024 |
Author: lala510 |
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Description: In this project we analyze and design the minimum mean-square error (MMSE) multiuser receiver for uniformly quantized synchronous code division multiple access (CDMA) signals in additive white Gaussian noise (AWGN) channels.This project is mainly based on the representation of uniform quantizer by gain plus additive noise model. Based on this model, we derive the weight vector and the output signal-to-interference ratio (SIR) of the MMSE receiver. The effects of quantization on the MMSE receiver performance is characterized in a single parameter named 鈥漞quivalent noise variance鈥? The optimal quantizer stepsize which maximizes the MMSE receiver output SNR is also determined.-In this project we analyze and design the minimum mean-square error (MMSE) multiuser receiver for uniformly quantized synchronous code division multiple access (CDMA) signals in additive white Gaussian noise (AWGN) channels.This project is mainly based on the representation of uniform quantizer by gain plus additive noise model. Based on this model, we derive the weight vector and the output signal-to-interference ratio (SIR) of the MMSE receiver. The effects of quantization on the MMSE receiver performance is characterized in a single parameter named 鈥漞quivalent noise variance鈥? The optimal quantizer stepsize which maximizes the MMSE receiver output SNR is also determined.
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Size: 147456 |
Author: prasad |
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Description: Linear CDMA Receivers Like Decorrelator MMSE and Matched filters efficien and fast code
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Size: 1024 |
Author: mansoor |
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Description: these are the gold codes used in the cdma systems.
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Size: 1024 |
Author: KRUDZ |
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Description: DS-spread spectrum系统中,噪声为加性高斯白噪声,传统单用户检测,线性解相关多用户检测和最小均方误差多用户检测的性能比较-DS-spread spectrum system, the noise is additive white Gaussian noise, the traditional single-user detection, the linear decorrelating multiuser detection and MMSE Multiuser Detection Performance Comparison
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Size: 1024 |
Author: wangyanli |
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Description: cdma detectors like decoorelator mmse mf and others
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Size: 3072 |
Author: Ghoney |
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Description: 改算法描述了基于最小均方误差的多用户信号检测-MMSE,MUD,CDMA
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Size: 1024 |
Author: 小民 |
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Description: MIMO-OFDM系统信号检测的各种算法比较-MIMO-OFDM system, a variety of signal detection algorithms
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Size: 4096 |
Author: 雷波 |
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Description: cdma系统，发射机采用直接扩频序列后发射，接收机采用MMSE接收机-cdma systems, the transmitter after the launch of direct sequence spread spectrum receiver using MMSE Receiver
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Size: 2048 |
Author: 刘远龙 |
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Description: Introduce the Multiuser Detection (MUD) for DS-CDMA system
Give two MUD methods for DS-CDMA system
–Decorrelating MUD
–Subspace MMSE MUD
Compare them with traditional decorrelating detection
Study the BER vs. SNR performance
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Size: 146432 |
Author: almamori |
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Description: 本文针对并行干扰抵消检测器的不足之处，提出了改进的并行干扰抵消检测算法——基于多项式展开的并行干扰抵消多用户检测算法。该算法将多项式展开检测器作为并行干扰抵消检测器第一级的数据估计值，以提高检测可靠性。通过仿真实验，首先验证了多项式展开检测器的性能。然后比较改进算法与传统检测器的性能，验证改进算法的系统性能得到明显改善；并与并行干扰抵消检测器、解相关检测器和MMSE检测器相比较，验
证得到该改进算法的性能也有不同程度的改善。
-this paper discusses the principle and performance of the
conventional detector and the parallel interference cancellation(PIC)detector
separately.Since the conventional detector take MAI only as the background noise without considering the existence of the other users,the existence of MAI has a significant impact on the performance of CDMA systems.Each stage of PIC detector utilizes the data estimates of the initial or previous stage,produces a new set of MAI estimates,and then subtracts out all of the MAI for each user in parallel.Through Monte Carlo simulation in different scenarios,the results illustrate the influence of MAI in conventional CDMA ystems.Theexperimental results show PIC detector can effectively eliminate MAI andimprove the system BER.
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Size: 571392 |
Author: bluels123 |
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Description: It will CDMA detectors ..
1. MMSE detector
2. Matched filter
3. Decorrelator detector
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Size: 16384 |
Author: malli |
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Description: This paper analyzed the spectral efficiency (total channel capacity per subband) of randomly-spread synchronous multicarrier code-division multiple-access (MCCDMA) channel subject to frequency-selective fading in the asymptotic regime of number of users and bandwidth going to infinity with a constant ratio for uplink and downlink. The following receivers are analyzed in this paper: a) jointly optimum receiver, b) linear MMSE receiver, c) decorrelator, and d) single-user matched filter.
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Size: 145408 |
Author: sh3e |
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