frequency-selective wireless channels
Optimizing time and space MIMO antenna system for frequency selective fading channels
... in wireless communication ...for frequency selective channels with prior knowledge of the channel at the ...for frequency flat channels, our results reduce to expressions for ...
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Identification of LOS in Time Varying, Frequency Selective Radio Channels
... cognitive wireless systems to perform better from the perspective of both radio transmission and wireless ...time-varying, frequency selective radio channels, based on the assumption ...
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Efficient Bidirectional DFE for Doubly Selective Wireless Channels
... time-varying channels. By exploiting the duality of time convolution and frequency-domain multiplication, the feedforward filtering is implemented in the frequency do- main by means of efficient ...
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Frequency-Shift Zero-Forcing Time-Varying Equalization for Doubly Selective SIMO Channels
... the wireless doubly selective channel and discuss the assumptions that hold throughout the pa- ...the frequency-domain representation of the minimal norm LTV-ZF equalizer and synthesize its low- ...
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Orthogonal frequency division multiplex synchronization techniques for frequency selective fading channels
... RTHOGONAL frequency division multiplexing (OFDM) was discovered by Chang in his pioneering paper in 1966 ...nondispersive channels [2], ...mobile wireless scenario—the increased dispersion associated ...
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Cumulant-Based Automatic Modulation Classification Over Frequency-Selective Channels
... underlying frequency selectivity of the wireless channel, causing an increase in complexity of the classification ...multipath frequency-selective and the modulation schemes considered are {2, ...
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Spreading Code Assignment Strategies for MIMO CDMA Systems Operating in Frequency Selective Channels
... Like CDMA systems, MIMO-CDMA systems encounter MAI as well as self interference (SI) due to the fact that autocorrelation and cross correlation properties of the employed spreading codes are not perfect [23]. MAI is the ...
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STC-Mimo Block Spread OFDM in Frequency Selective AWGN Channels
... for wireless communications systems are increased, call for new techniques became necessary in order to increase spectrum efficiency and to improve link ...a wireless link promises significant improvements ...
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Antenna Subset Selection for Cyclic Prefix Assisted MIMO Wireless Communications over Frequency Selective Channels
... the frequency-selective nature of the channels, which is a worst case for antenna selection schemes because it excludes the case of potentially different receive ...
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Rake Receiver Detection of Adaptive Modulation Aided CDMA over Frequency Selective Channels
... Abstract—A closed form Bit Error Ratio (BER) formula is derived for a fixed-mode Quadrature Amplitude Modulation (QAM) scheme employing Rake receivers and receiver antenna diversity. The analysis is extended to constant ...
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Improved Diversity Analysis of Coded OFDM in Frequency Selective Channels
... broadband wireless communication systems, Multi-Input Multi-Output (MIMO) techniques have been incorporated with Orthogonal Frequency Division Multiplexing ...For frequency selective ...
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Implementation of Transmit Diversity Schemes
... Space Frequency Block Codes (SFBC) are used to obtain diversity ...the frequency domain. In SFBC multiple flat fading channels can be obtained by performing orthogonal frequency division ...
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Diversity Techniques for Single Carrier Packet Retransmissions over Frequency Selective Channels
... Single carrier with cyclic-prefix transmissions has recently gained a certain attention, especially after its adoption for the uplink in the 3GPP Long-Term-Evolution (LTE) standard [1]. Actually, single-carrier signaling ...
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Successive interference cancellation schemes for time-reversal space-time block codes
... assume frequency-flat channels and suffer performance degradation over frequency-selective ...for frequency-selective fading en- vironments has attracted great attention, and it ...
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Receivers and CQI Measures for MIMO-CDMA Systems in Frequency-Selective Channels
... Information-theoretic studies in [4, 5] showed that multiple- transmit, multiple-receive-antenna MIMO systems offer po- tential for realizing high spectral efficiency in a wireless communications system. In [6, 7], a ...
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A Low-Complexity Time-Domain MMSE Channel Estimator for Space-Time/Frequency Block-Coded OFDM Systems
... orthogonal frequency-division multiplexing (OFDM) transmission through frequency-selective channels, this paper pursues a channel estimation approach in time domain for both ...
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Adaptive Zero Padding OFDM over Frequency Selective Multipath Channels
... Orthogonal frequency division multiplexing (OFDM) has been receiving growing interest in recent years and has been adopted in many ...for wireless local area networks (wireless LAN) in North America ...
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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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Performance of MUTP aided MIMO systems over correlated frequency selective wireless communication channels: a multi cell perspective
... uncorrelated frequency-selective fading channel per- forms better than the system over correlated frequency- selective fading channel, requiring 5 dB lesser ...uncorrelated ...
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SECURE PACKETS IN WIRELESS SENSOR NETWORKS BASED ON FREQUENCY SELECTIVE CHANNELS
... The wireless channel itself can be used to generate information theoretic secure ...signal frequency as ...the frequency-selectivity of multipath fading ...
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