multicarrier DS-CDMA communications
Multicarrier DS CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
... SC DS-CDMA or broadband MC-CDMA to achieve the best pos- sible BER performance, both require high-com- plexity ...SC DS- ■ Table ...SC DS-CDMA, MC-CDMA and conventional ...
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Zero Forcing and Minimum Mean Square Error Multiuser Detection in Generalized Multicarrier DS CDMA Systems for Cognitive Radio
... dynamic communications envi- ronment such as in cognitive radio, when certain frequency bands are occupied and some of the subcarriers in the MC DS-CDMA are sensed having high interference ...
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Performance of Generalized Multicarrier DS CDMA Using Various Chip Waveforms
... Paper approved by D. I. Kim, the Editor for Spread Spectrum Transmis- sion and Access of the IEEE Communications Society. Manuscript received November 30, 2001; revised June 11, 2002 and August 22, 2002. This work ...
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Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... Modern Communications Research Institute, Northern Jiaotong University, ...ultrawide-band CDMA systems for the advanced wireless mobile communication ...
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Cross Layer Resource Allocation for Variable Bit Rate Multiclass Services in a Multirate Multicarrier DS CDMA Network
... less Communications and Networking, Prentice-Hall, ...wireless communications and wire- less/wireline interworking, particularly in the areas of resource management, mobility management, and end-to-end ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... he spent eight months at the Department of Electrical Engineer- ing, Princeton University, as a Visiting Research Fellow. He is cur- rently an Associate Professor at the University of Cassino, Italy. His current research ...
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Design and Performance Analysis of an Adaptive Receiver for Multicarrier DS CDMA
... On the other hand, the critical issue for MC-CDMA sys- tems remains to be the improvement of the system capacity in multiuser communications, in which the multiple access interference (MAI) becomes the ...
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Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... radio communications, published in excess of 500 research papers, organized and chaired conference sessions, presented overview lectures, and has been awarded a number of ...multimedia communications ...
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Software Defined Radio Assisted Adaptive Broadband Frequency Hopping Multicarrier DS CDMA
... wireless communications implies that the transmission rate at both the BSs and MSs can be adaptively adjusted according to instantaneous operational conditions, including the communication envi- ronment and ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... hopping multicarrier direct-sequence code division multiple access (SFH/MC DS-CDMA) is proposed and inves- tigated, which can be rendered compatible with the existing second-generation narrowband ...
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Fractionally Spread Multicarrier CDMA: A Multiple Access Scheme for Various Wireless Channels
... In multicarrier code-division multiple-access (MC- CDMA) the total system bandwidth is divided into a number of subbands, where each subband may use direct-sequence (DS) spreading and each subband ...
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Design of a Baseband Transceiver for Multicarrier CDMA Communications
... setting the frequency spacing to the inverse of the symbol time, as in the case of OFDM [1, 2]. The received signals are transformed into the frequency domain and despreaded. In this way, signals scattered among many ...
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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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Joint interference cancellation and relay selection algorithms based on greedy techniques for cooperative DS CDMA systems
... In this work, we propose interference cancellation techniques and a multi-relay selection algorithm based on greedy methods for the uplink of cooperative direct-sequence code-division multiple access ...
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Analytical BER Performance of DS CDMA Ad Hoc Networks using Large Area Synchronized Spreading Codes
... It is demonstrated that LAS DS-CDMA exhibits a significantly better performance than the family of classic DS-CDMA systems operating in a quasi-synchronous scenario associated with a hig[r] ...
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PERFORMANCE ENHANCEMENT OF MULTICARRIER-CDMA WITH PAPR
... From result of simulation in MATLAB, by increase the number of users reduced PAPR and CCDF is decrease in MC-CDMA System. So, Performance of MC-CDMA is decreased when the number of user increased.Further in ...
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Subspace Based Blind and Group Blind Space Time Multiuser Detection for the Generalized Multicarrier DS CDMA Uplink
... Fig. 2. BER performance of the various MC DS-CDMA MUDs considered. A total of K = 10 users were supported and the group-blind MUDs benefitted from the knowledge of K ˜ = 8 intracell users’ spreading codes. ...
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A Novel Technique for Multiple Access Interference Reduction in DS-CDMA Wireless Communications
... This paper analyses the BER performance of CDMA system by using an intelligent algorithm based on neural network ADALINE to perform SIC with the goal of improving the system efficiency. The simulation results have ...
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Analysis, Design, and Test of CDMA LFSR with Offset Mask Using Standard ICs
... Hardware implementation of Linear Feedback Shift Register (LFSR) plays a great and very impor- tant role in communication systems, and in many security devices. In this paper, a design of LFSR with offset mask has been ...
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Multiuser Decorrelating Based Long Range Frequency Domain Channel Transfer Function Prediction in Multicarrier DS CDMA Systems
... OFDM/MC DS-CDMA symbol block having the same number of symbols as the data symbol block is inserted before every J − 1 transmission blocks and the J consecutive transmission blocks are treated as a ...
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