fading multipath radio channels
STUDY OF VARIOUS MULTIPATH CHANNELS& SMALL-SCALE FADING& ITS PERFORMAMCE IN WIRELESS COMMUNICATION
... for multipath incorporate barometrical ducting, ionospheric reflection and refraction, and reflection from water bodies and earthly questions, for example, mountains and ...of multipath incorporate ...
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Spectrum Sensing Over Multipath Fading Channels through Ofdm Signals for Cognitive Radios
... Fig: 1.basic diagram of cognitive radio network. estimate sequence however conjointly show the existence of possible alternative of thresholds and alternative algorithmic program style parameters that make sure ...
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Analysis of Cognitive Radio Capacity in Fading Channels
... cognitive radio in fading channels namely flat fading and frequency selective fading ...Flat fading channel following Rayleigh distribution shows better performance in terms of ...
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A Study on Communication Channel Estimation for Emergency Networks in Underground Mining Environment
... of multipath channel and the researches on frequency correlation characteristics have attracted much attention of experts and ...distance, radio carrier frequency and the speed of mobile station for ...
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Energy detection based spectrum sensing over enriched multipath fading channels
... Cognitive radio (CR) has been largely proposed as an effective technology of future wireless communications that is capable of mitigating the currently witnessed spectrum scarcity that arises due to the regulated ...
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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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Using the physics of the fast fading to improve performance for mobile radio channels
... Several important questions related to the proposed method are addressed in our current work. The prediction algorithms described in Section 3 are applied to BPSK systems and require the knowledge of transmitted data at ...
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A Comparative Study between Multipath Fading Channels
... distributed fading coefficient should be modeled with a non-zero mean, giving rise to the Rician ...Rayleigh fading with strong line of sight (LOS) content is said to have a Rician distribution, or to be ...
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Modelling and Simulation of Multipath Fading Channels for Comparative Analysis of Different M-Array Modulation Schemes
... and radio frequency identification (RFID) operating at frequencies extending into the millimeter-wave regime (>30 ...in fading channels to reduce the effect of flat fading on system ...
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MITIGATION OF FADING EFFECTS IN MULTIPATH CHANNELS
... to multipath propagation. The propagation of radio signal through multipath wireless channel is a compli- cated process often characterized by various impairments including multipath ...
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Performance of compressive sensing algorithms over time varying frequency selective channel
... that channels are rich but practical channel encountered in practice are sparse in ...sparse channels are perfectly estimated by the recent advances from the theory of ...
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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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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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Transmitter antenna diversity and adaptive signaling using long range prediction for fast fading DS/CDMA mobile radio channels
... Some of the proposed transmitter antenna diversity schemes are Orthogonal Transmitter Diversity (OTD), Transmitter Adaptive Array (TxAA), Selective Transmitter Diversity (STD), and Space Time Transmitter Diversity ...
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Improving Signal Strength in Wireless Mobile Communication using Diversity Combining Technique over Rayleigh Fading Channels
... Frequency non selective fading is when all the frequency components of a signal undergo generally same level of fading. It occurs when the transmitted signal bandwidth is small as compared to coherence ...
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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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Research on Anti Jamming Performance of GMSK in Shortwave Frequency Hopping
... Frequency hopping communication realizes communication by changing the carrier frequency determined by the sender and the receiver and carries the frequency hopping of signal messages in a wide frequency band against ...
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Adaptive constrained CM based multicarrier CDMA receivers in multipath fading channels
... The blind adaptive equalizations of multiuser CDMA systems have been examined in many literatures, e.g., in [3-10,12-14]. However, the blind detections of MC- CDMA systems were discussed merely in a few papers, e.g., ...
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Constant Envelope DCT- and FFT- based Multicarrier Systems
... In [82], the performance of CE-OFDM system in multipath fading channels using FDE is studied. Several channel estimation techniques that use low-PAPR OFDM signals are examined in the presence of SSPA ...
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Chip Discrimination for UWB Impulse Radio Networks in Multipath Channels
... impulse radio systems that approximate multi-user interference as a Gaussian random process are well known and widely available in literature including [3, 4, 17]; results are not so easily found reporting ...
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