multipath fading CDMA channel
Comparison of Bit Error Rate for Multipath Fading Channel in DS CDMA
... of fading is demonstrated by approach available in ...of fading. MATLAB provides a simple and easy way to demonstrate fading take place in wireless ...different fading models and MATLAB based ...
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Performance of Wideband CDMA Using Space Time Spreading over Multipath Nakagami Fading Channels
... Rayleigh fading channel may significantly outperform the cor- responding conventional RAKE receiver assisted scheme com- municating over frequency-selective Rayleigh fading ...
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Serial Acquisition of DS CDMA Signals in Multipath Fading Mobile Channels
... represents the i.i.d. random variables uniformly distributed in [0,2 ); and represents the additive white Gaussian noise (AWGN) with a double-sided power spectral density of 2. Note that since the 1 interfering users are ...
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Performance of Reverse Link Synchronous DS CDMA System on a Frequency Selective Multipath Fading Channel with Imperfect Power Control
... Direct-sequence code-division multiple-access (DS-CDMA) has been considered as the most promising multiple-access scheme for the next generation mobile communications, be- cause of its high flexibility in o ff ...
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Adaptive constrained CM based multicarrier CDMA receivers in multipath fading channels
... multiuser CDMA systems have been examined in many literatures, ...MC- CDMA systems were discussed merely in a few papers, ...frequency-selective fading as the transmission rate of the input data is ...
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MC DS CDMA System Based on DWT and STBC in Multipath Fading ITU Channels Model
... flat fading channel models at all Doppler frequencies and multicarrier size in fixed and mobile wireless ...flat fading channel and selective multipath fading ...
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Title: Performance Analysis of Channel Estimation in MC-CDMA over OFDM in Fading & Non Fading Channel Environment
... MC-CDMA with adaptive modulation is under scrutiny as appealing procedures for 4G portable system, in which the received signal is normally undermined by multipath fading effect. Steele and Webb ...
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Adaptive Transmitter Precoding for Time Division Duplex CDMA in Fading Multipath Channels: Strategy and Analysis
... The channel phase ambiguity can be circumvented by the use of differential encoding and decoding of the ...adaptive channel estimation Here, we describe the adaptive channel estimator used in Figure ...
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A Robust Parametric Technique for Multipath Channel Estimation in the Uplink of a DS CDMA System
... Doppler fading, or because one or more interfering users become active before the desired user parameters are ...varying channel, we assumed a maximum mobile velocity of 50 km/h, which at the operating band ...
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Joint Closed-Loop Power Control and Base Station Assignment for DS-CDMA Receiver in Multipath Fading Channel with Adaptive Beamforming Method
... Abstract: In this paper, we propose smart step closed-loop power control (SSPC) algorithm and base station assignment based on minimizing the transmitter power (BSA- MTP) technique in a direct sequence-code division ...
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CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels
... Power control was conceived originally as a mechanism to deal with the near-far problem, but a more general emerg- ing view is that it is a flexible mechanism to provide dif- ferent quality of service to users with ...
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Improved Predictive Power Control of CDMA System in Rayleigh Fading Channel
... among CDMA users in cellular and mobile radio ...of fading channel significantly degrades the performance of CDMA systems because communication over fading channels require higher power ...
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Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... Let the first user be the user-of-interest and consider the corre- lator-based RAKE receiver in conjunction with maximum ratio combining (MRC), as shown in Fig. 4, where the superscript and subscript of the reference ...
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Channel length assisted symbol synchronization for OFDM systems in multipath fading channels
... (considering multipath channels) having com- parable complexity (~ O(N)) to that of the simplest approach in [5] (considering AWGN channels), where N denotes the number of ...the channel length is related ...
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Adaptive relay techniques for OFDM-based cooperative communication systems
... Relaying schemes for single-carrier transmission over frequency-selective channels are in- vestigated in [73, 74, 76–79, 81]. A cooperative filter-and-forward beamforming (FF-BF) tech- nique [73, 74, 81] was proposed and ...
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Survey of Mobility Models for Energy Conservation in Mobile Adhoc Network
... in channel access, put receive in standby mode ,use or allocate contiguous slots for transmission and reception, turn radio off(sleep) when not transmitting or receiving for effective savings of ...
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ISSN 2349-4506
... 7. M. D. Hassib, M. Singh, M. Ismail and R. Nordin, “Efficient and low complexity STBC-OFDM scheme over fading channel,” in Communications (APCC), 2012 18th Asia-Pacific Conference on, 2012. 8. L. D'Orazio, ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... a multipath fading environment, and a maximum ratio combining (MRC) assisted RAKE receiver is ...Nakagami- multipath fading channels, which closely model various multipath channels, ...
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Title: Improved Space Time Block Coding Diversity Technique for Rayleigh Fading Channel in Wireless Systems
... In this paper, an improved STBC technique is proposed and implemented on MIMO system Rayleigh Fading Channel .In this work QAM AND BPSK modulation technique is used. MIMO system using Alamouti STBC coding ...
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Survey on Various Types of Noise and Methods for Noise Removal
... different multipath. Multipath occurs because of reflection of waves from the surface and the ...communication multipath and reflection will not be a problem since the delay is so little, but in UWA ...
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