It is pointed out that the result in Salo et al. “The Distribution of the Product of Independent Rayleigh Random Variables” IEEE Trans. Antennas Propag., vol. 54, pp. 639–643, Feb. 2006, is a particular case of a much more general result known since the 1970s. A general technique (known as the function technique) is described that can be used derive a wide range of results similar to Salo et al.

Most seismic codes specify empirical fonnulas to estimate the fundamental vibration period of buildings. Evaluated first in this paper are the fonnulas specified in present U.S. codes using the available data on the fundamental period of buildings "measured" from their motions recorded during eight California e~­ quakes, starting with the 1971 San Fernando earthquake and ending w.ith the 1994 N...

This paper derives new closed-form formulas for error probabilities of single and multichannel communications in Rayleigh and Nakagami-m fading. Closed-form solutions to three generic trigonometric integrals are presented as part of the main result, providing a unified method for the derivation of exact closed-form average symbol-error probability expressions for binary and M -ary signals with ...

We study the localization of Rayleigh waves propagating in a semi-infinite and isotropic medium with inhomogeneities that are modeled as rods parallel to the incoming wave front and are distributed randomly up to a maximum depth. For a perfectly smooth surface, the localization length of a Rayleigh wave is predicted to reach a minimum at intermediate wavelength l and to diverge for both low and...

Various characterizations of the distribution of the ratio of two independent Rayleigh random variables are presented. These characterizations are based, on a truncated moment; on hazard function; and on certain functions of order statistics.

Coding and modulation tradeoffs for limiterdiscriminator based CPM transceivers are examined in Rayleigh, fast fading environments. Comparisons are made on the basis of a fixed bandwidth to information rate ratio, so coded schemes and uncoded schemes can be compared fairly. It is shown that using the proper balance of modulation and coding is important to achieve good performance. It is found t...

The objectives of this paper are to study, analyze and evaluate the performance of Direct Sequence – Wide Code Division Multiple Access (DS-WCDMA) systems in Mobile Rayleigh fading propagation channel. The Parameters which are considered for the evaluation performance are Additive white Gaussian noise (AWGN),Rayleigh propagation fading channel and the Code sequence .length. The evaluation of DS...

We show that the sum capacity of “spatially wellcorrelated” Gaussian MIMO broadcast channel (BC) is rather larger than that of the uncorrelated (i.i.d. Rayleigh fading) Gaussian MIMO BC, assuming a special structure of transmit correlation of users. Moreover, a potential sum-rate gap of an ideal correlated Rayleigh fading channel is shown to be M logM over the uncorrelated case, where M is the ...