It illustrates the

Rayleigh distribution which is slightly similar to ZF approach, outperforms the Rician channel model.

To the best of our knowledge, the effects of the no wireless radio fading models other than the

Rayleigh distribution have been considered in the performance of the adaptive networks [1]-[4], while it is a very important issue.

Since we model each interfering signal with

Rayleigh distribution, with PDF expressed as

[[alpha].sub.n,1] and [[alpha].sub.n,2] are the channel coefficients following

Rayleigh distribution, and [[xi].sub.i] is the Gaussian noise, which follows Gaussian distribution with zero mean and variance [N.sub.0]/2.

As a consequence, the norm of [DELTA]C then approximately follows a

Rayleigh distribution. Hence, we fitted a

Rayleigh distribution to the results, obtaining as output the desired PDF of [DELTA]C.

Rayleigh distribution. We assume that fading coefficients are not known to the receiver, except for the system of MO-RTT.

, histogram stretching is done with respect to

Rayleigh distributionWeibull

Rayleigh distribution: Theory and applications.

For an ideal narrowband process, [f.sub.s](S) can be approximated by the

Rayleigh distribution [21]; the analytical expression is given as

The Nakagami-m distribution is generally assumed to be a more general model, which would approximate Rice distribution when m > 1,

Rayleigh distribution for m = 1, and fading more severe than Rayleigh when m < 1 [20].

Two kinds of statistic models including single distributions [3-5], such as the K distribution (K),

Rayleigh distribution (RA), Rician distribution (RI), and Nakagami distribution, as well as compound distributions [6-9], such as the homodyned K distribution (HK), generalized K distribution, Rician inverse Gaussian distribution (RilG), Nakagami-generalized inverse Gaussian distribution (NGIGD), have been investigated for analyzing the statistical properties of the ultrasonic-echoed envelope data.

Wu, Lee and Hou (2007) explored the maximum likelihood estimation of life performance under

Rayleigh distribution, and developed a test procedure for evaluating the performance of the product.