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frequency-selective multipath channels

Adaptive Zero Padding OFDM over Frequency Selective Multipath Channels

Adaptive Zero Padding OFDM over Frequency Selective Multipath Channels

... In channels with large de- lay spread, simulation results show that the proposed AZP- OFDM offers better performance than those of both CP- and ZP-OFDM with fixed guard ...

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Space-Time Joint Interference Cancellation Using Fuzzy-Inference-Based Adaptive Filtering Techniques in Frequency-Selective Multipath Channels

Space-Time Joint Interference Cancellation Using Fuzzy-Inference-Based Adaptive Filtering Techniques in Frequency-Selective Multipath Channels

... shown in Figure 6. In general, the use of the “OR” operator is able to produce better performance than the “AND” op- erator in multipath Rayleigh-fading channels. Subsequently, this is followed by the ...

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Cumulant-Based Automatic Modulation Classification Over Frequency-Selective Channels

Cumulant-Based Automatic Modulation Classification Over Frequency-Selective Channels

... Rayleigh frequency selective channels, to classify amplitude-shift keying (ASK), binary PSK (BPSK) and QAM ...for multipath fading channels has also been investigated, assuming a ...

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Diversity Techniques for Single Carrier Packet Retransmissions over Frequency Selective Channels

Diversity Techniques for Single Carrier Packet Retransmissions over Frequency Selective Channels

... over multipath frequency-selective channels, hybrid automatic repeat request (HARQ) protocols are usually used in order to ensure data ...cyclic frequency- shift diversity and ...

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1.
													A robust and efficient channel estimation scheme for ofdm systems in frequency selective fading channels

1. A robust and efficient channel estimation scheme for ofdm systems in frequency selective fading channels

... orthogonal frequency division multiplexing (OFDM) systems [1], a frequency selective (FS) channel is commuted into an accumulation of flat fading channels, which can be indemnified by simply ...

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Effective Needs of Space-Time-Frequency Coding in MIMO-OFDM Communication over Frequency Selective Fading Channels

Effective Needs of Space-Time-Frequency Coding in MIMO-OFDM Communication over Frequency Selective Fading Channels

... As said in Section I, the real inspiration driving STF coding is to enhance the differing qualities advantage from arrange NtNr (in a ST coded framework) to arrange by promoting likewise on multipath assorted ...

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Linear and Nonlinear Time Domain Block Equalizers  on MIMO Frequency Selective Channels

Linear and Nonlinear Time Domain Block Equalizers on MIMO Frequency Selective Channels

... to multipath propagation must be ...the frequency selective fading ...time selective fading with some compensation technique such as V-BLAST detection for each subcarrier [3], the long symbol ...

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Performance of Reverse Link Synchronous DS CDMA System on a Frequency Selective Multipath Fading Channel with Imperfect Power Control

Performance of Reverse Link Synchronous DS CDMA System on a Frequency Selective Multipath Fading Channel with Imperfect Power Control

... over frequency selective Rayleigh fading channels in the presence of imperfect power control ...the multipath intensity profile (MIP) shape and the number of resolvable paths on the ...

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A Comparative Study between Multipath Fading Channels

A Comparative Study between Multipath Fading Channels

... The growing demands for voice and multimedia services on mobile wireless communication spur the advancement of the wireless communication field in the recent decade. One of the major underlying technologies is the ...

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SECURE PACKETS IN WIRELESS SENSOR NETWORKS BASED ON FREQUENCY SELECTIVE CHANNELS

SECURE PACKETS IN WIRELESS SENSOR NETWORKS BASED ON FREQUENCY SELECTIVE CHANNELS

... Key distribution and key management face many challenges in wireless sensor networks (WSNs), mainly because of the low computational capabilities of sensor motes, their limited battery lifetime, and the lack of a private ...

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Optimizing time and space MIMO antenna system for frequency selective fading channels

Optimizing time and space MIMO antenna system for frequency selective fading channels

... (MIMO) channels [10], [11] or joint transmitter receiver systems ...for multipath fading, with prior knowledge of the channel at the ...a frequency domain ...fading channels in the presence of ...

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Receivers and CQI Measures for MIMO-CDMA Systems in Frequency-Selective Channels

Receivers and CQI Measures for MIMO-CDMA Systems in Frequency-Selective Channels

... in frequency-selective channels, in order to avoid the complications of multidimensional ...to multipath channels, and show that in this case successive decoding achieves ...

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MITIGATION OF FADING EFFECTS IN MULTIPATH CHANNELS

MITIGATION OF FADING EFFECTS IN MULTIPATH CHANNELS

... combat multipath fading in both Rayleigh and Rician channels is the focus of this ...combat frequency selective fading, equalization deals with frequency selective fading to ...

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Improved Diversity Analysis of Coded OFDM in Frequency Selective Channels

Improved Diversity Analysis of Coded OFDM in Frequency Selective Channels

... Orthogonal Frequency Division Multiplexing ...For frequency selective channels, to achieve Inter Symbol Interference and achieve spatial diversity combine beamforming with ...and ...

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Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels

Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels

... between any pair of OCC. Here, the orthogonality is pre- served by assigning a flock of element codes to a user in- stead of a single code as in traditional CDMA systems with unitary codes. The use of complete ...

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Identification of LOS in Time Varying, Frequency Selective Radio Channels

Identification of LOS in Time Varying, Frequency Selective Radio Channels

... multipath e ff ect is caused by objects in the surrounding environment, it can be concluded that path-arrival times are a ff ected by the locations of these objects. Assuming that the surrounding objects within an ...

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Blind CP OFDM and ZP OFDM Parameter Estimation in Frequency Selective Channels

Blind CP OFDM and ZP OFDM Parameter Estimation in Frequency Selective Channels

... (1) with s the received sampled data stream s = [s(0) · · · s(N − 1)] T and S its Power Spectral Density (PSD) (N is the number of samples). Note that the larger the number of samples, the higher the frequency ...

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An Adaptive Channel Estimation Algorithm Using Time Frequency Polynomial Model for OFDM with Fading Multipath Channels

An Adaptive Channel Estimation Algorithm Using Time Frequency Polynomial Model for OFDM with Fading Multipath Channels

... In this work, we consider the problem from another point of view. Because of the correlation of the fading multi- path channel, it can be viewed as a smoothly varying function of both time and frequency. It has ...

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Channel length assisted symbol synchronization for OFDM systems in multipath fading channels

Channel length assisted symbol synchronization for OFDM systems in multipath fading channels

... Synchronization algorithms have been extensively reported for OFDM. A good survey can be found in [10]. Some works are briefly described here. Specially designed training preambles in [6,11] can be used for symbol ...

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Secured Communication over Frequency Selective Fading Channels: A Practical Vandermonde Precoding

Secured Communication over Frequency Selective Fading Channels: A Practical Vandermonde Precoding

... the frequency-selective channel can be modeled as an N × (N + L) MIMO Toeplitz ...MIMO channels to transmit both the common message and the confidential ...the frequency- selective ...

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