linear multipath fading channels
Adaptive constrained CM based multicarrier CDMA receivers in multipath fading channels
... have been examined in many literatures, e.g., [24-29]. However, the reduced-tap receivers for MC-CDMA sys- tems were only discussed in a few papers. To reduce the complexity of DS-CDMA system, the received signal is ...
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Frequency estimation in multipath rayleigh-sparse-fading channels
... a linear weight addition of the path periodograms; such an estimator coincides with the ML frequency estimator for multipath channels with unknown deterministic path amplitudes ...a linear ...
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A Low Complexity Approach to Space Time Coding for Multipath Fading Channels
... In classical wireless cellular systems, user terminals are miniaturized handsets and typically cannot host more than a single antenna. On the other hand, base stations can be eas- ily equipped with multiple antennas. ...
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Statistical Analysis of Multipath Fading Channels Using Generalizations of Shot Noise
... Remark 1. Some observations concerning the results of Lemma 1 are now in order. These observations are important because they provide additional insight regarding the role of the rate of Poisson process in modeling ...
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Spectrum Sensing Over Multipath Fading Channels through Ofdm Signals for Cognitive Radios
... section, we have a tendency to develop the algorithm CIGLRT for linear observation models. In Section four we have a tendency to state the most results regarding the characterization of the thresholds that ...
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A Secure Chaos-Based Communication Scheme in Multipath Fading Channels Using Particle Filtering
... The kalman filter is an optimal algorithm for recursive estimation of the states (or any other parameters) of a linear system with Gaussian noise [31]. A distinctive feature of this filter is that its mathematical ...
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Minimization Of Inter Carrier Interference Using Iterative Technique for Mimo-Ofdm
... in multipath fading channels the time period of an OFDM block is not ...to channels with ICI and no ...iterative linear MSE has been implemented to maximize the output signal to ...
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MIMO Assisted Space Code Division Multiple Access: Linear Detectors and Performance over Multipath Fading Channels
... In [18], it has been demonstrated that the STS scheme is an open-loop transmit diversity scheme designed specifically for the CDMA systems employing DS spreading [18], [19]. The downlink performance of the CDMA systems ...
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Adaptive Transmitter Precoding for Time Division Duplex CDMA in Fading Multipath Channels: Strategy and Analysis
... a linear minimum mean square error precoding strategy using blind channel estimation for fading multipath channels that allows for simple matched filtering at the mobile unit and is easy to ...
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Blind spectrum sensing for cognitive radio over time variant multipath flat fading channels
... Time-variant multipath flat-fading channels with memory are very common in wireless communication systems, es- pecially in mobile radio communication systems ...the multipath channel is ...
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Optimal Spacing Design for Pilots in OFDM Systems over Multipath Fading Channels
... In this section, we present some answers to the question of minimum number of pilots needed for channel estima- tion in OFDM systems. This problem has been the sub- ject of several investigations, the theoretical study ...
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New results for Shannon capacity over generalized multipath fading channels with MRC diversity
... m fading was derived in terms of Fox’s H and Gamma functions [8] in ...Nakagami-m fading with MRC/SC/switch and stay combining (SSC) in terms of Meijer G-function was presented in ...Nakagami-m ...
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Adaptive relay techniques for OFDM-based cooperative communication systems
... the channels take place over multipath propagation which leads to frequency selective fading and delay ...of multipath fading in the multiple hops if there is no channel compensation ...
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CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels
... small-scale fading [8, 9]. Nevertheless, the instantaneous small-scale fading of the two links is uncorrelated, which makes the downlink problem more difficult for FDD ...
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2 The wireless channel
... With a limit on the transmit power (either at the base-station or at the mobile), the largest distance between the base-station and a mobile at which communication can reliably take place is called the coverage of the ...
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Constant Envelope DCT- and FFT- based Multicarrier Systems
... A class of multicarrier systems called CE-OFDM is proposed and examined. Both FFT- and DCT-based systems with MPAM mapper in them are considered. The signals in these systems have constant envelope and, hence, have 0 dB ...
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Research on Anti Jamming Performance of GMSK in Shortwave Frequency Hopping
... of channels that are interfered, the curve of BER varies with signal-to-noise ...a linear relationship, and its ability to resist interference is greatly reduced, which in turn causes serious interference ...
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STUDY OF VARIOUS MULTIPATH CHANNELS& SMALL-SCALE FADING& ITS PERFORMAMCE IN WIRELESS COMMUNICATION
... It is influenced by proliferation qualities of the channels between the CUs and PUs, for example, path-misfortune, shadowing, and fading. Moreover, the quantity of CUs that transmit and their areas ...
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MITIGATION OF FADING EFFECTS IN MULTIPATH CHANNELS
... Multipath fading occurs in any propagation environment with the possibility of transmitted signal taking several paths and/or with relative motion among the receiver and the ...mitigating fading ...
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MC DS CDMA System Based on DWT and STBC in Multipath Fading ITU Channels Model
... flat fading channel models at all Doppler frequencies and multicarrier size in fixed and mobile wireless ...flat fading channel and selective multipath fading ...
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