uplink MC-CDMA system
Rotated Walsh Hadamard Spreading with Robust Channel Estimation for a Coded MC CDMA System
... the system is ...The system investigated here is a downlink MC-CDMA ...the uplink, MC-CDMA is not reasonable due to the high asynchronism between the di ff erent users and ...
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Performance of the Smart Antenna Aided Multicarrier DS CDMA and its Uplink
... generalized MC DS- CDMA system investigated in [8], [9], which includes the sub- classes of multitone DS-CDMA [3] and orthogonal MC DS- CDMA [4] as special ...generalized ...
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Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... for MC-DSCDMA-Uplink system is proposed in this ...synchronous uplink transmissions, is proposed to exploit frequency and temporal diversity in frequency-selective block-fading ...of ...
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Vol 4, No 3 (2012)
... Multicarrier CDMA (MC-CDMA) is robust against the interference caused by the multipath fading channels, it is sensitive to the factors that destroy the orthogonality between the ...single-user ...
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Performance Evaluation of Adaptive Modulation Based MC CDMA System
... received uplink signal at the carrier of fre- quency f^1 and attempted to predict the down link signal at carrier of frequency f^2 without any feedback from the ...
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Throughput Improvement of STS-Based MC DS-CDMA System with Variable Spreading Factor
... in MC- CDMA is ...of CDMA system using variable spreading factors ...for CDMA uplink is formulated as an optimization problem in terms of the spreading gain and transmit power of ...
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Blind Direct Multiuser Detection for Uplink MC CDMA: Performance Analysis and Robust Implementation
... QS uplink of a MC- CDMA system, we first provide the analytical performance assessment of the direct blind MUD two-stage receiver pro- posed in [14], aimed at evaluating the performance degra- ...
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PAPR Reduction Using PSO-GSA Tuned PTS Techniques in MC-CDMA System
... diversity. MC-CDMApreferred to be used in ...diversity. MC-DS-CDMA is used in uplink scenario. In uplink Pseudo Noise (PN) code is used since uplink transmission is ...
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Ant Colony Based Multiuser Detection for MC DS CDMA Systems
... for system designers and for channel-adaptive reconfiguration, when compared to both single-carrier DS-CDMA and frequency (F)- domain spread multicarrier CDMA (MC-CDMA) operating ...
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DOA Estimation in the Uplink of Multicarrier CDMA Systems
... the uplink of a multicarrier code-division multiple-access (MC-CDMA) network and assume that the base station is endowed with a uniform linear ...
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Performance Enhancement of MC CDMA System through Turbo Block Codes
... in MC-CDMA system, by reducing ...multi-carrier CDMA (SCS-MPSK-MCCDMA) system [3], a modified PTS scheme for uplink communications [4], optimum fixed subcarrier scrambling [5], ...
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Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... (eg: uplink in cellular networks), Gold codes have good cor- relation properties ...a MC-CDMA system (using Walsh codes) in a down- link scenario and MC-DS-CDMA (using Gold ...
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A Robust Parametric Technique for Multipath Channel Estimation in the Uplink of a DS CDMA System
... The problem of estimating the multipath channel parameters of a new user entering the uplink of an asynchronous direct sequence- code division multiple access (DS-CDMA) system is addressed. The ...
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Uplink channel power control improvement in DS CDMA system using channel predictions
... To overcome power escalation and improve the recovery from deep fading (deviation of the attenuation affecting a signal over certain propagation media) a new approach power control method has been developed. Based on ...
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A Unified Approach to the Analysis of Multicarrier DS CDMA over Nakagami $M$ Fading Channels
... ‘spacing-optimized’ MC DS-CDMA schemes in terms of m = 1, 2 and ∞ ...orthogonal MC DS-CDMA. By contrast, for any other scenarios or- thogonal MC DS-CDMA outperforms multitone ...
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Performance of Fractionally Spread Multicarrier CDMA in AWGN as Well as Slow and Fast Nakagami m Fading Channels
... conventional MC- CDMA schemes have usually been designed without consider- ing the time-selectivity of the wireless channels, they may not be sufficiently efficient, when communicating over wireless chan- ...
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MC CDMA PAPR Reduction Using Discrete Logarithmic Method
... (MC CDMA) signals are based on combining the Discrete Cosine Transform (DCT) /multi-resolution Discrete Wavelet Transform (DWT) with companding is proposed ...of MC CDMA ...
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Survey of Interference Mitigation Techniques and Correlation Properties of Spreading Codes for MC-CDMA System
... Lu, H.-Y and Suk-Hoon Noh [8-9] have suggested serial or successive and parallel cancellation techniques, in serial cancellation the interference caused by the remaining users is removed from each user in succession. ...
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Performance Evaluation of MC CDMA for Fixed WiMAX with Equalization
... and CDMA. The difference between traditional DS-CDMA and MC-CDMA is that in MC-CDMA frequency spectrum is spread in frequency domain whereas in DS-CDMA spectrum band is ...
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Performance Enhancement of MC-CDMA System through STTC based STBC Site Diversity
... for MC-CDMA system is proposed using B-STTC and STTC based STBC with MIMO technique to improve the performance of mobile terminals in the ...of MC- CDMA system achieves better ...
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