time-selective CDMA channels
Equivalence of Linear MMSE Detection in DS CDMA and MC CDMA Systems over Time and Frequency Selective Channels
... in time and frequency selective ...general time-frequency framework that includes the different CDMA systems as special ...between time and frequency domains that is used to derive ...
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Adaptive Space Time Spreading Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami Fading Channels
... Wideband CDMA channels are typically frequency- selective fading channels, having a number of resolvable ...ing channels, multiuser interference, and background ...frequency ...
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Adaptive Space Time Spreading Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami m Fading Channels
... Wideband CDMA channels are typically frequency- selective fading channels, having a number of resolvable ...ing channels, multiuser interference, and background ...frequency ...
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Performance of Wideband CDMA Using Space Time Spreading over Multipath Nakagami Fading Channels
... sity scheme communicating over the frequency non-selective Rayleigh fading channel may significantly outperform the cor- responding conventional RAKE receiver assisted scheme com- municating over ...
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Performance of Asynchronous MC CDMA Systems with Maximal Ratio Combining in Frequency Selective Fading Channels
... the time-frequency equivalence for multicarrier signals, the generic BER expression of the MC- CDMA system with MRC is expressed in terms of the chan- nel impulse response (CIR) information, instead of the ...
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A Combined Antenna Arrays and Reverse Link Synchronous DS CDMA System over Frequency Selective Fading Channels with Power Control Error
... transmission time in each mobile station ...the time dif- ference between the reference time generated in the BS and the arrival time of the dominant signal transmitted from each MS, and then ...
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Rake Receiver Detection of Adaptive Modulation Aided CDMA over Frequency Selective Channels
... Another approach to mitigating the effects of fading is in- volving diversity techniques, such as space, frequency or time diversity [11, Ch 5]. Receiver antenna diversity using var- ious combining methods [11, Ch ...
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Spreading Code Assignment Strategies for MIMO CDMA Systems Operating in Frequency Selective Channels
... first time, parity bit-selected spreading has been proposed where the code assignment in single input single output (SISO) DS-CDMA systems is determined by the transmitted ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... mobile channels, where decision-directed channel estimators were used for estimating the multipath components and the output of the RAKE fingers was combined employing various signal combining ...the CDMA ...
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Signal detection for orthogonal space-time block coding over time-selective fading channels: A PIC approach for the G(i) systems
... As in a CDMA PIC detector, the above procedure comprises two components: tentative symbol estimation (TSE) and ten- tative interference subtraction (TIS). With the iterations pro- gressing, the TSE will contain ...
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Receivers and CQI Measures for MIMO-CDMA Systems in Frequency-Selective Channels
... Information-theoretic studies in [4, 5] showed that multiple- transmit, multiple-receive-antenna MIMO systems offer po- tential for realizing high spectral efficiency in a wireless communications system. In [6, 7], a ...
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Frequency-Shift Zero-Forcing Time-Varying Equalization for Doubly Selective SIMO Channels
... predominant time-invariant component. In this representation, the time-varying compo- nent of the minimal norm LTV-ZF equalizer consists solely of computing frequency-shift (FRESH) versions of the received ...
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Low Complexity Iterative Receiver for Space Time Coded Signals over Frequency Selective Channels
... as a prefilter for the turbo detector. Simulation results show that this prefiltering improves significantly the receiver per- formance particularly over severe channels. Our receiver achieves a good tradeo ff ...
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... Forward Error Correction (FEC) schemes such as Reed- Solomon (RS), Turbo and Low Density Parity Check (LDPC) codes have been extensively investigated to provide reliable data transmission [1–6]. Hard decision decoding ...
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Combined Channel Estimation and Turbo Equalization on Wireless Channels
... If error correction coding is used, then information can be iteratively passed between the equalizer and decoder to improve performance. This is called turbo equalization [2]. Recently, several such schemes were proposed ...
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Volume Exclusion in Calcium Selective Channels
... investigation is essential. We have performed MC simula- tions for the Chung and co-workers’ model channel. We have constructed an accurate representation of their model and obtained good agreement in computations of ...
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Performance Analysis of MC CDMA over Different Fading Channels
... same time to provide high data rates with high quality of ...and CDMA (code division multiple ...and CDMA. In MC-CDMA input data symbols are spread with spreading codes such as, PN sequence ...
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International Journal of Emerging Technology and Advanced Engineering
... High data rate and strong reliability in wireless communication systems are becoming the dominant factors for a successful exploitation of commercial networks. MIMO-OFDM, a new wireless broadband technology, has gained ...
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Distributed Space Time Block Code over Mixed Rayleigh and Rician Frequency Selective Fading Channels
... Alamouti’s scheme (see, e.g., [1, 11]) to D . This enables the decoupling detection of two data blocks at the destination and achieves a rate of 1/2. To achieve the same goal in the considered scenario, the source with ...
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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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