multicarrier DS-CDMA channels
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 ...
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Joint Impact of Frequency Synchronization Errors and Intermodulation Distortion on the Performance of Multicarrier DS-CDMA Systems
... In this paper, we have evaluated the BER of MC-DS- CDMA downlink systems subject to both CFO and IMD in frequency-selective Rayleigh fading channels. The BER anal- ysis, which is quite accurate in ...
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Performance of Generalized Multicarrier DS CDMA Using Various Chip Waveforms
... Having obtained the statistics of both the MPI as well as the MAI, the average BER of the generalized MC DS-CDMA system communicating over multipath Nakagami- fading channels can be estimated using ...
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Multicarrier DS CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
... delivered by the paths that cannot be combined due to the low number of RAKE fingers in envi- ronments with a high delay spread. As a remedy, hybrid schemes based on selection combining and maximal ratio combining ...
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Coherent and Differential Downlink Space Time Steering Aided Generalised Multicarrier DS CDMA
... However, the schemes of [2, 4, 13] are based on the assump- tion that perfect Channel State Information (CSI) is available at the receiver. The estimation accuracy of the CSI has a grave impact on the attainable ...
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Blind Joint Soft Detection Assisted Slow Frequency Hopping Multicarrier DS CDMA
... FH/MC DS-CDMA system, when using SFH and BPSK data modula- ...fading channels, since they describe the urban multipath channel [11], and its probability density function (pdf) models a continuous ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... sequence CDMA (DS-CDMA)— and in particular its resistance to multipath e ff ects induced by the radio channel as the communication rate grows larger and larger [1]—while relaxing some very demand- ing ...
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Design and Performance Analysis of an Adaptive Receiver for Multicarrier DS CDMA
... Future generations of broadband wireless mobile communi- cation systems are expected to support various services over a multitude of channels encountered in indoor, open rural, suburban, and urban environments, ...
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Accurate BER of MC DS CDMA over Rayleigh Fading Channels
... conventional DS-CDMA, affect likewise the performance of MC- DS-CDMA ...of multicarrier modulation. To analyze the BER performance of MC-DS-CDMA systems, the interferences ...
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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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Adaptive constrained CM based multicarrier CDMA receivers in multipath fading channels
... of DS-CDMA system, the received signal is passed through a bank of filters, called a cyclically shifted filter bank (CSFB), and each of which is a cyclically shifted version of the matched filter ...
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Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... broadband multicarrier direct-sequence CDMA (MC DS-CDMA) using STS-assisted transmit diversity, when communicating over frequency-selective Rayleigh-fading ...MC DS-CDMA is ...
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Equivalence of Linear MMSE Detection in DS CDMA and MC CDMA Systems over Time and Frequency Selective Channels
... selective channels. Specifically, we consider direct sequence (DS)-CDMA, multicarrier (MC)-CDMA, and the MC-DS-CDMA ...different CDMA systems as special ...different ...
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Differential space time modulation schemes for smart antenna aided generalized multicarrier DS CDMA systems
... (MC DS-CDMA) system of [10] to propose a novel Differential Space-Time Spreading (DSTS) scheme as well as a Differential Steered Space-Time Spreading (DSSTS) scheme for the sake of improving the downlink ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... FH/MC DS-CDMA systems using blind joint soft-detection has been investigated in [2] and [3], under assumption that the receiver has no knowledge of the associated FH patterns ...FH/MC DS-CDMA ...
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A Unified Approach to the Analysis of Multicarrier DS CDMA over Nakagami $M$ Fading Channels
... MC DS-CDMA schemes in terms of m = 1, 2 and ∞ ...multitone DS-CDMA outperforms orthogonal MC ...MC DS-CDMA outperforms multitone ...MC DS-CDMA schemes are ...
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Generalized Multicarrier DS CDMA Using Various Chip Waveforms
... the multicarrier system us- ing both the half-sine and the raised-cosine chip waveforms achieved their lowest BER at low normalized subcarrier spacing values of λ, while single-carrier DS-CDMA ...
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Serial Acquisition of DS CDMA Signals in Multipath Fading Mobile Channels
... The communication model under consideration consists of simultaneous transmitters, which includes data trans- mission users (who have finished acquisition) and one initial synchronization user [whose PN sequence is being ...
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Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels
... Figure 5 shows the performance improvement achieved by using PIC with suitable combining schemes under frequency-selective fading channels using identical simula- tion parameters as in Fig. 4. The per-carrier ...
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Accurate BER Analysis of Asynchronous DS CDMA Systems in Ricean Channels
... Figures 1 and 2 illustrate the average BER performance versus the number of users, when the effects of background noise are ignored. Figure 1 compares the results obtained from our accurate BER analysis to our simulation ...
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