DS/CDMA multipath signal
Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... multitone DS-CDMA, then a subcarrier signal will overlap with a high number of subcarrier signals of both the same user and with those of the interfering ...subcarrier signal is low, which ...
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Adaptive interference suppression for DS-CDMA systems based on interpolated FIR filters with adaptive interpolators in multipath channels
... principal components (PC) of the covariance matrix R of the observation data. This requires a computationally expensive eigendecomposition to extract the signal subspace, which leads to poor performance in systems ...
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Support Vector Machine Multiuser Receiver for DS CDMA Signals in Multipath Channels
... The most efficient way of adaptively placing the RBF centers to the desired noise-free signal states is the supervised cluster al- gorithm [31]. In the multiuser detection context, the algorithm will require to ...
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A Robust Parametric Technique for Multipath Channel Estimation in the Uplink of a DS CDMA System
... the multipath channel parameters of a new user entering the uplink of an asynchronous direct sequence- code division multiple access (DS-CDMA) system is ...the multipath channel, is proved to ...
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Adaptive Minimum BER Linear Multiuser Detection for DS CDMA Signals in Multipath Channels
... adaptive signal processing and estimation theory and in their application to radar, audio, and communications ...on signal processing, and has published over 150 research ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... (SFH/MC DS-CDMA) is proposed and inves- tigated, which can be rendered compatible with the existing second-generation narrowband CDMA and third-generation wideband CDMA ...a multipath ...
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MC DS CDMA System Based on DWT and STBC in Multipath Fading ITU Channels Model
... the multipath channel impairments and still provide high-data rates in a limited bandwidth is the use of an Orthogonal Frequency-Division Multiplexing (OFDM) modulation method and multiple antennas at the ...
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Accurate Bit Error Rate Calculation for Asynchronous Chaos-Based DS-CDMA over Multipath Channel
... conventional DS-CDMA system under multipath channel, an RAKE receiver is used to overcome the severe consequences of the multipath fading ...transmitted signal by the corresponding ...
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Bit Error Performance for Asynchronous Ds Cdma Systems Over Multipath Rayleigh Fading Channels (RESEARCH NOTE)
... Consider K users transmitting asynchronously over a multipath-fading environment to a single receiver station. Assume that each transmitter uses a binary phase shift keying (BPSK) DS/CDMA modulation. ...
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Analysis of a Combined Antenna Arrays and Reverse Link Synchronous DS CDMA System over Multipath Rician Fading Channels
... asynchronous multipath Rician channels, and analyzes the performance of an improved AA, in which RL- STT is incorporated to effectively make better an estima- tion of covariance matrices at a beamformer-RAKE ...
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Signal Processing by Generalized Receiver in DS-CDMA Wireless Communication Systems with Optimal Combining and Partial Cancellation
... to signal processing (GASP) in noise, is ...under multipath fading channel in the case of periodic code scenario is ...for DS-CDMA systems discussed in the ...
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Comparison of Bit Error Rate for Multipath Fading Channel in DS CDMA
... In this paper, one of the important topic in wireless communications , that is the concept of fading is demonstrated by approach available in MATLAB.In this section , the results obtained from the MATLAB simulations are ...
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Serial Acquisition of DS CDMA Signals in Multipath Fading Mobile Channels
... received signal contributes two ...quency-selective multipath Rayleigh fading ...a DS-CDMA system utilizing binary phase-shift keying (BPSK) ...
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Analytical Bit Error Rate Performance of DS CDMA Ad Hoc Networks using Large Area Synchronous Spreading Sequences
... The family of large area synchronous (LAS) [1] spreading codes exhibits an interference free window (IFW), where the off-peak aperiodic auto-correlations and cross- correlations become zero [2]. These attractive ...
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An Efficient Code Timing Estimator for DS CDMA Systems over Resolvable Multipath Channels
... time-dispersive multipath channel over which the DS-CDMA system ...time-dispersive multipath channels for the DS-CDMA sys- ...
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Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... Nolan K. [8] suggested the option of dynamic selection of sub- carriers in an OFDM system using a channel mask and an enhanced training symbol (ETS). More recently, [16] has ex- plored the option of nulling certain ...
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Statistical Multipath Signal Detection and Transmission over CDMA Mobile Ad-hoc Network
... In an MANET, the network topology changes rapidly and unpredictably, there by leading to dynamic topology [9]. One of the fundamental challenges in MANETs research is how to increase the overall network throughput while ...
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Adaptive Transmitter Precoding for Time Division Duplex CDMA in Fading Multipath Channels: Strategy and Analysis
... Downlink signal model, precoding and receiver The (downlink) signal transmitted from the base station, during the ith symbol interval, can be written ...
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A Unified Exact BER Performance Analysis of Asynchronous DS CDMA Systems Using BPSK Modulation over Fading Channels
... Fig. 3. BER versus the number of users K in an asynchronous DS- CDMA system using random spreading sequences and BPSK modulation communicating over Hoyt channels. The length of the random spreading ...
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Performance of Reverse Link Synchronous DS CDMA System on a Frequency Selective Multipath Fading Channel with Imperfect Power Control
... of DS-CDMA system is mainly limited by multiple-access interference (MAI), and thus techniques to reduce the MAI, such as multiuser detection or interfer- ence cancellation, are currently of great interest ...
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