time-domain DS-CDMA
Subband Adaptive Array for DS CDMA Mobile Radio
... frequency domain subband ...in time domain are then transformed into frequency domain subband samples using ...frequency domain, the sub- band signal vectors at nth subband in frequency ...
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Multiuser Detection in Multicarrier CDMA Systems Employing Both Time Domain and Frequency Domain Spreading
... MC DS-CDMA ...single-carrier DS-CDMA or a MC-CDMA is in- voked for the sake of supporting a high number of users, the em- ployment of advanced multiuser detection algorithms becomes ...
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Coherent and Differential Downlink Space Time Steering Aided Generalised Multicarrier DS CDMA
... codes. The algorithm aims for ensuing that the users sharing the same T-domain sequence have the lowest possible F- domain interference coefficient. The selection procedure will continue, until all the ...
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Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... the time domain. Thus this MC-DS- CDMA technique plays vital role in uplink transmission of wireless communication than any other ...TF- domain spreading MC-DS-CDMA, ...
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Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... direct-sequence CDMA (MC DS-CDMA) using STS-assisted transmit diversity, when communicating over frequency-selective Rayleigh-fading ...MC DS-CDMA is because it constitutes a ...
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A Unified Approach to the Analysis of Multicarrier DS CDMA over Nakagami $M$ Fading Channels
... direct-sequence CDMA [2] (multitone DS-CDMA) and that of orthogonal multicarrier DS-CDMA (MC DS-CDMA) [3] spreads the serial-to-parallel (S-P) converted data streams using ...
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International Journal of Emerging Technology and Advanced Engineering
... of CDMA and spread spectrum with OFDM in order to create a more robust modulation scheme that could survive frequency selective fading and thus OFDM- CDMA was ...MC- CDMA, time spreading ...
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Performance of the Smart Antenna Aided Generalized Multicarrier DS CDMA Downlink using both Time Domain Spreading and Steered Space Time Spreading
... PERFORMANCE RESULTS In this section the BER performance of the downlink of a generalized MC DS-CDMA system employing SSTS and using 32-chip Walsh codes as T-domain spreading sequences as[r] ...
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Performance of the Smart Antenna Aided Generalized Multicarrier DS CDMA Downlink using both Time Domain Spreading and Steered Space Time Spreading
... (MC DS-CDMA), which constitutes an attractive scheme [1], [2], [3], [4], based on a combination of DS-CDMA and ...MC DS-CDMA system in- vestigated in [5], [6], where it has been ...
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Time and Frequency Domain Spreading Assisted MC DS CDMA using Interference Rejection Spreading Codes for Quasi Synchronous Communications
... MC DS-CDMA signal is identified with the aid of two spreading sequences, one applied in the context of the T-domain and one in the ...MC DS-CDMA signals by invoking two different ...
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Broadband MC DS CDMA Using Space Time and Frequency Domain Spreading
... (MC DS-CDMA) constitutes one of the most promising multiple-access schemes and hence enjoyed wide ...MC DS- CDMA system using space-time spreading [1] assisted transmit di- versity has ...
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A Multicarrier DS CDMA System Using Both Time Domain and Frequency Domain Spreading
... F- domain spreading in MC DS-CDMA systems are ...based DS-CDMA or MC-CDMA using solely T-domain spreading or solely F-domain spreading is utilized, these broadband ...
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Enabling dynamic spectrum access using SS MC CDMA
... By combining frequency domain and time domain dispersal of modulated symbols, two main variants of multi-carrier spread spectrum systems, the MC-CDMA and MC direct sequence CDMA MC-DS-CD[r] ...
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Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... (frequency domain spreading) and MC direct sequence CDMA (MC-DS-CDMA) (time domain ...of CDMA and OFDM, resulting in better frequency diversity and higher data ...in ...
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Buffer aided distributed space time coding schemes and algorithms for cooperative DS CDMA systems
... In this section, a simulation study of the proposed buffer- aided DSTC techniques for cooperative systems is carried out. The DS-CDMA network uses randomly generated spreading codes of length N = 16. The ...
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Performance and Analysis of DS-CDMA Rake Receiver and Analyzing the BER Performance in Presence of Nonlinear Distortion in DS-CDMA System
... Wireless cellular telephony has been growing at a faster rate than wired-line telephone networks. The main factor driving this tremendous growth in wireless coverage is that it does not need the setting up of expensive ...
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Multiuser Detection for Synchronous DS-CDMA in AWGN Channel
... There are two categories of the most proposed detectors: linear multiuser detectors and non-linear detectors. In linear multiuser detection, a linear mapping (transformation) is applied to the soft outputs of the ...
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Performance of Turbo Interference Cancellation Receivers in Space Time Block Coded DS CDMA Systems
... space- time block codes are being used, the overall code rate of both systems is not affected, thus the puncturing pattern used determines the total system code ...
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Space Time Chip Equalization for Maximum Diversity Space Time Block Coded DS CDMA Downlink Transmission
... space- time chip equalizers f e and f o and then projected on the or- thogonal complement of the subspace spanned by the even and odd multiuser code matrices C[2i] and C[2i + 1] and the even and odd pilot code ...
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Performance and Analysis of DS CDMA Rake Receiver
... The rake receiver [3, 6] consists of multiple correlators, in which the receive signal is multiplied by time-shifted versions of a locally generated code sequence. The intention is to separate signals such that ...
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