Results 191 to 200 of about 2,887 (229)

A fast and accurate Rayleigh fading simulator

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), 2004
This paper presents a simulator that efficiently generates correlated complex Gaussian variates with a power spectral density as described by Jakes (Jakes, Jr., 1974). The simulator consists of a fixed IIR filter followed by a variable polyphase interpolator, to accommodate different Doppler rates.
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Rayleigh fading simulation on PCs

IEEE TENCON'90: 1990 IEEE Region 10 Conference on Computer and Communication Systems. Conference Proceedings, 2002
A system for Rayleigh fading simulation is presented together with the results of some experiments and field trials carried out for the purpose of comparison of burst error correcting codes. The most notable features of the system are to be found in the proposed approach to Rayleigh fading simulation, realized on a PC in an easy and flexible form ...
E. Angeleri, L. Mazzei, A. Pegoretti
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Acquisition of spread spectrum signals in Rayleigh fading

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE, 2003
We analyze the acquisition of direct-sequence-spread-spectrum signals by an antenna array of M elements in a flat Rayleigh fading environment subject to additive stationary temporally-uncorrelated zero-mean Gaussian interference. The observations are complex baseband sampled signal vectors received at the array elements at discrete time instants.
Moe Z. Win, Ranjan K. Mallik
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Rayleigh fading networks: a cross-layer way

IEEE Transactions on Communications, 2009
This paper addresses Rayleigh fading networks, and in particular, wireless ad-hoc and sensor networks over Rayleigh fading channels. First, we will model Rayleigh fading networks and show how to map the wireless fading channel to the upper layer parameters for cross-layer design.
Guansheng Li, Pingyi Fan, Khaled Ben Letaief   +2 more
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Construction of Polar Codes in Rayleigh Fading Channel

IEEE Communications Letters, 2019
In this letter, we investigate the effective construction method of the polar codes in the Rayleigh fading channel (RFC) based on the Gaussian approximation (GA) algorithm. For the RFC, two algorithms are proposed to find the equivalent binary input AWGN channel (BIAWGNC).
Dekun Zhou, Kai Niu 0001, Chao Dong 0002
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Optimized Selection Diversity for Rayleigh Fading Channels

IEEE Transactions on Communications, 1982
This paper considers the choice of the number of diversity branches for minimizing the bit error rate of a selection diversity system using noncoherent binary frequency-shift keying modulation for transmission over a Rayleigh fading Gaussian channel. An exact expression for the optimum number of branches, L_{sel}^{\ast} , is given.
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Invertible bounds for M-QAM in Rayleigh fading

IEEE Transactions on Wireless Communications, 2005
In this letter, we derive tight invertible bounds on the bit-error probability (BEP) for the coherent detection of M-ary quadrature amplitude modulation with Gray code bit mapping in Rayleigh fading channels. These bounds enable us to easily obtain tight lower and upper bounds on the bit-error outage (BEO), i.e., BEP-based outage probability, in a log ...
Andrea Conti 0001, Moe Z. Win, Marco Chiani   +2 more
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Analysis of minimum selection GSC in Rayleigh fading

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
This paper analyzes the error performance of an improved generalized selection combining (GSC) technique called minimum selection GSC (MS-GSC) in flat Rayleigh fading for coherent digital modulation schemes. Here the minimum number of diversity branches is selected such that their combined signal-to-noise ratio (SNR) is above a given threshold.
Pranay Gupta, Nidhi Bansal, Ranjan K. Mallik   +2 more
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Compressive Sensing for the Capacity of a Rayleigh Fading Channel

2011 IEEE International Conference on Communications (ICC), 2011
A given objective function, $I(p_X(x))$, is to be maximized over the argument $p_X(x)$, where $p_X(x)$ is a continuous function of $x \in R^1$. Rather than optimizing $I(p_X(x))$ over the domain of functions, where the optimal solution $p_X^*(x)$ is non-zero only at a few but unknown discrete points $x \in \{x_1 , x_2 , \ldots , x_S \} $, is it ...
Jocelyn Aulin, Djordje Jeremic
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Statistical simulation models for Rayleigh and Rician fading

IEEE International Conference on Communications, 2003. ICC '03., 2004
New simulation models are proposed for Rayleigh and Rician fading channels. First, the statistical properties of Clarke's fading model with a finite number of sinusoids are analyzed. An improved Clarke's model is then proposed for the simulation of Rayleigh fading channels.
Chengshan Xiao, Yahong Rosa Zheng, Norman C. Beaulieu   +2 more
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