Search - channel estimation for CDMA

Search - channel estimation for CDMA - List

[matlab] STARChannelEstimation DL : 1: DS-CDMA通信系统中的空时移动信道估计，原文发表在IEE PROCEEDING OF COMMUNICATION上-DS-CDMA system of space-time mobile channel estimation, Original published in the IEE, 0c OF COMMUNICATION
Update : 2025-02-17 Size : 10kb Publisher : 吴美武
[Program doc] UWB DL : 1: ：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.
Update : 2025-02-17 Size : 148kb Publisher : 季昀
[Post-TeleCom sofeware systems] Direct_blind_multiuser_detection_for_CDMA_in_multi DL : 0: Direct Blind Multiuser Detection for CDMA in Multipath without Channel Estimation
Update : 2025-02-17 Size : 209kb Publisher : hesi
[Communication-Mobile] lesson6 DL : 0: 基本原理： FIR模型的系统辩识信道估计方法概述信道估计算法举例（GSM和CDMA）-Basic principle: FIR system identification model of channel estimation method for channel estimation algorithm for an overview of an example (GSM and CDMA)
Update : 2025-02-17 Size : 451kb Publisher : 王琴
[matlab] batchprocessingalgorithem DL : 0: 这是一篇很好的有关信道估计的文章，可以用来快速的了解信道估计的基本内容-and MAI induced by multiple-input, multiple-output channels. In particular, this article reviews the typical inverse filter criteria (IFC) based algorithm, super-exponential algorithm, and constant modulus algorithm along with their relations, performance, and improvements. Several advanced applications of these algorithms are illustrated, including blind channel estimation, simultaneous estimation of multiple time delays, signal-tonoise ratio (SNR) boost by blind maximum ratio combining, blind beamforming for source separation in multipath, and multiuser detection for direct sequence/code division multiple access (DS/CDMA) systems in multipath.
Update : 2025-02-17 Size : 1.09mb Publisher : renkill
[Other] matlab-code DL : 1: hi this methods for channel estimation and equalization &adaptive equalization, blind adaptive equalization (CMA)&Rake receiver for CDMA
Update : 2025-02-17 Size : 11kb Publisher : alirashedi
[File Format] DOA-Estimation DL : 0: 一篇非常实用的无线通信方向的文献，是关于cdma系统中doa估计的经典-The use of antenna arrays in wireless communications makes it possible to estimate the directions of arrival (DOAs) of impinging waveforms. The latter can be exploited to enhance channel estimation accuracy or as an input for advanced mobile positioning systems. In this paper, we consider the uplink of a multicarrier code-division multiple-access (MC-CDMA) network in which the base station is endowed with multiple receiving antennas arranged in a uniform linear array. Transmission takes place over a multipath channel, and the goal is the joint estimation of the channel responses and DOAs of the uplink signals. In doing so, we follow a maximum-likelihood (ML) approach and assume that users transmit orthogonal training sequences to facilitate the task of separating the signals. This way, all unknown parameters are estimated independently of each other with affordable complexity. Theoretical analysis and computer simulations are used to assess the performance of the propose
Update : 2025-02-17 Size : 244kb Publisher : Zhang Lin
[Industry research] 00905780 DL : 0: Channel Estimation for 36 Wideband CDMA Systems Using the Kalman Filtering Algorithm
Update : 2025-02-17 Size : 346kb Publisher : Naser
[Documents] 1-comp DL : 0: In this paper, we investigate blind channel estimation for Multiple Input Multiple Output (MIMO) multi-carrier CDMA (MC-CDMA) systems in the uplink scenario. An Autocorrelation Contribution Matrix (ACM) method is proposed in comparison with the subspace approach. Using only second order statistics, the ACM approach shows similar performance to that of subspace based approach. The added advantage is that it eliminates the need for rank estimation and noise power calculation as in subspace technique. In particular we incorporate blind channel estimation with Layered Space Frequency Equalisation (LSFE),which employs successive interference cancellation and therefore provides significant performance improvement over the conventional linear minimum mean square error (MMSE) based approach.
Update : 2025-02-17 Size : 107kb Publisher : Casper_z
[Communication-Mobile] 5 DL : 2: 5. 在三条径的瑞利信道中，对于直接序列扩频： (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(5. In three-path Rayleigh channel, for direct sequence spread spectrum: (1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate. (2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve. (3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve.)
Update : 2019-01-15 Size : 3.39mb Publisher : kmdcdy