time-selective fading CDMA channels
Performance of Wideband CDMA Using Space Time Spreading over Multipath Nakagami Fading Channels
... space- time spreading (STS) based transmit diversity is investigated, when frequency-selective Nakagami- m fading channels, multiuser interference and background noise are ...
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Adaptive Space Time Spreading Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami m Fading Channels
... Nakagami-m fading channels, multiuser in- terference, and background noise are ...frequency- selective fading, the number of resolvable paths at the receiver may vary over a wide range ...
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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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Equivalence of Linear MMSE Detection in DS CDMA and MC CDMA Systems over Time and Frequency Selective Channels
... of CDMA systems as well as their robustness against ...for CDMA sys- tems. Three important CDMA systems are DS-CDMA, MC- CDMA, and the hybrid ...
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BER Performance for Downlink MC-CDMA Systems over Rician Fading Channels
... Rician fading channels. A time-domain method to obtain bit error rate (BER) by calculating moment generating function (MGF) of the decision variable for a tapped-delay- line channel model is ...the ...
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Performance of Asynchronous MC CDMA Systems with Maximal Ratio Combining in Frequency Selective Fading Channels
... arbitrary fading parameters and correlations between the channel paths or ...the time-frequency equivalence for multicarrier signals, the generic BER expression of the MC- CDMA system with MRC is ...
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Transmitter antenna diversity and adaptive signaling using long range prediction for fast fading DS/CDMA mobile radio channels
... flat fading channels that can reliably predict future fading coefficients far beyond the coherence ...(DS/CDMA) channels. It is demonstrated that frequency selective ...
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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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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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Effective Needs of Space-Time-Frequency Coding in MIMO-OFDM Communication over Frequency Selective Fading Channels
... frequency-selective fading channels" such as the performance and capacity of space time block coded (STBC) multi-user CDMA system over Rayleigh fading channel condition using ...
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Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... Nakagami- fading channels. The optimum spacing of the MC DS-CDMA system required for achieving the minimum BER is investigated and the BER performance of the system having optimum spacing is ...
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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 ...
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Bit Error Rate Analysis for MC CDMA Systems in Nakagami Fading Channels
... MC- CDMA systems in frequency-selective Nakagami-m fading ...independent fading channels, which are not necessarily identically ...
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Adaptive constrained CM based multicarrier CDMA receivers in multipath fading channels
... multiuser CDMA systems have been examined in many literatures, ...MC- CDMA systems were discussed merely in a few papers, ...frequency-selective fading as the transmission rate of the input ...
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Bi-Level Fh-Cdma Scheme For Communication Systems Over Rayleigh And Rician Channels
... In this paper, we proposed a new two-level FH-CDMA scheme. The prime/FH-CDMA and RS/FH-CDMA schemes were special cases of our scheme. The performance analyses showed that the two-level FH- ...
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Web Applications Testing using White Box Method
... flat fading and frequency selective fading channels), channel estimation, adaptive equalization, and ...Rayleigh fading channel. For frequency selective fading channel, we ...
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Deterministic Modeling and Long Range Prediction of Fast Fading Channels with Applications to Mobile Radio Systems
... is time-variant, as we experience in wireless communication ...for time variant channels, to be adaptive to the time variations in the channel ...varying channels efficiently, but their ...
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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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Performance comparison of multiuser detectors with channel estimation for flat Rayleigh fading CDMA channels
... It is also important to evaluate the performance of multiuser detectors when channel estimation is not perfect and to investigate the effect of channel estimation error on multiuser detection. Following the approach in ...
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CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels
... small-scale fading coe ffi cients are generated through the typ- ical urban (TUx) model used in W-CDMA 3G studies ...The CDMA spreading gain is N = 64 for circuit-switched systems and N = 8 for ...
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