multipath flat fading channels
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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Modelling and Simulation of Multipath Fading Channels for Comparative Analysis of Different M-Array Modulation Schemes
... in fading channels to reduce the effect of flat fading on system performance, including both fixed terminals and mobile communications ...
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Spectrum Sensing Over Multipath Fading Channels through Ofdm Signals for Cognitive Radios
... [13] J. K. Tugnait, “On multiple antenna spectrum sensing under noise variance uncertainty and flat fading,” IEEE Trans. Signal Process., vol. 60, no. 4, pp. 1823-1832, Apr. 2012. [14] X. Wang, H. Li, and ...
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MITIGATION OF FADING EFFECTS IN MULTIPATH CHANNELS
... 2x1 flat Rayleigh and Rician fad- ing channels for each of diversity and coding schemes as well as their combination as shown in tables ...two Multipath Rayleigh Fading Channel blocks are set ...
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A Comparative Study between Multipath Fading Channels
... Rayleigh Fading channel, Rician Fading channel ...Rayleigh fading channel refers to a multiplicative distortion h(t) of the transmitted signal s(t), as in y(t) = h(t)·s(t)+ n(t), where y(t) is the ...
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Energy detection based spectrum sensing over enriched multipath fading channels
... Energy detection (ED) is considered a simple and adequate sensing method, compared to other detection schemes, due to its non-coherent structure and low computational and im- plementation complexities [3]. It is widely ...
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Research on Anti Jamming Performance of GMSK in Shortwave Frequency Hopping
... characteristics, multipath channels can be divided into flat fading channels and frequency selective fading ...case multipath will not cause interference between ...called ...
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A Low Complexity Approach to Space Time Coding for Multipath Fading Channels
... frequency-selective channels is generally too com- plex for practical channel memory and modulation constel- lation ...resulting flat-fading chan- ...
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TRAINING AND DEVELOPMENT OFARTIFICIAL NEURAL NETWORK MODELS: SINGLE LAYER FEEDFORWARD AND MULTI LAYER FEEDFORWARD NEURAL NETWORK
... This paper proposed anew Space Time Block Coded Orthogonal Frequency-Division Multiplexing (STBC- OFDM) system based on Discrete Framelet transform (FT) instead of Fast Fourier Transform (FFT) under different channel ...
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Dual Tree Wavelet based OFDM: A Performance Calculation of Bit Error Rate
... AWGN, flat fading channel and selective fading channel the OFDM-DT-CWT outperform the other OFDM system and offers a large improvement in SNR and better ...selective fading channels as ...
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Adaptive constrained CM based multicarrier CDMA receivers in multipath fading channels
... d 0 (k) c (k) 0 , . . . , d (k) 0 c (k) G−1 , . . . , d (k) ς −1 c (k) 0 , . . . , d (k) ς −1 c (k) G−1 T (1) where G is the processing gain and [ • ] T denotes the trans- position operation. The sequence of each data ...
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Study of Methods to Mitigate Fading in Mobile Communication
... to multipath fades due to a large number of scaterers and ...such channels, taking into account, the phenomenon of multipath fading and correlation between ...to multipath fading ...
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Adaptive relay techniques for OFDM-based cooperative communication systems
... over fading channels and makes it possible to have flexible and adaptive communi- cations for the source-relay and relay-destination ...of multipath propaga- tion environment leads to accumulated ...
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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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Optimal Spacing Design for Pilots in OFDM Systems over Multipath Fading Channels
... To approach the theoretical results of the estimation problem, we have to reduce the noise effect on received pilot symbols with high SNR regimes. We have treated the case of invariant multipath channel over each ...
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Performance of compressive sensing algorithms over time varying frequency selective channel
... the channels are composed of a few dominant taps and large part of taps is zero or approximately ...multi-path channels. By exploiting the coherent sparsity of the multipath fading ...
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Channel length assisted symbol synchronization for OFDM systems in multipath fading channels
... in multipath channels, utilizing a correlation length that equals the summation of the channel and CP ...in multipath channels, an approach in that work [13] may require many symbols to obtain ...
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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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Code Tracking Algorithms for Mitigating Multipath Effects in Fading Channels for Satellite-Based Positioning
... better multipath diversity, better narrowband interference rejection, and potentially, better capacity com- pared to narrowband techniques ...wireless channels, due to the various adverse effects of the ...
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New results for Shannon capacity over generalized multipath fading channels with MRC diversity
... generalized multipath fading ...Weibull multipath fading channel under flat fading ...the fading effect and the channel model will approaches the one of ...
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