Why is Rayleigh channel used?
Why is Rayleigh channel used?
The Rayleigh fading model can be used to analyse radio signal propagation on a statistical basis. It operates best under conditions when there is no dominant signal (e.g. direct line of sight signal), and in many instances cellular telephones being used in a dense urban environment fall into this category.
What is Rayleigh channel model?
Rayleigh fading models assume that the magnitude of a signal that has passed through such a transmission medium (also called a communication channel) will vary randomly, or fade, according to a Rayleigh distribution — the radial component of the sum of two uncorrelated Gaussian random variables. …
What is rician factor?
Rician factor The Rician K-factor is defined as the ratio of signal power in dominant component over the (local-mean) scattered power. In the expression for the received signal, the power in the line-of-sight equals C2/2.
What is difference between AWGN and Rayleigh fading channel?
The lowest bit error rate can be observed for 16 PSK. From the BER point of view, AWGN channel is much better than multipath Rayleigh fading channel. That means, it have the bit error rate is less at multipath Rayleigh fading and bit error rate is large for 10 dB SNR AWGN channel.
What is Rayleigh noise?
Rayleigh Noise: The Rayleigh distribution is a continuous probability distribution for positive valued random variables. It is often observed when the magnitude of a vector is related to its directional components (Philippe Cattin, 2013).
What is Rayleigh distribution in radio?
In mobile radio channels, the Rayleigh distribution is commonly used to describe the statistical time varying nature of the received envelope of a flat fading signal, or the envelope of an individual multipath component. Every multipath component follows a Gaussian distribution on the receiver side.
When is the small-scale fading envelope distribution Ricean?
When there is a dominant stationary (nonfading) signal component present, such as a line-of-sight propagation path, the small-scale fading envelope distribution is Ricean. In such a situation, random multipath components arriving at different angles are superimposed on a stationary dominant signal.
What is Rayleigh fading environment?
Performance Analysis of Rayleigh Fading the receiver. This propagation environment is known as fading environment. The channel fading depends on moving speed of the receiver a nd/or transmitter. The by the Rayleigh distribution [19].
When does the Ricean distribution degenerate to a Rayleigh distribution?
Thus, the Ricean distribution degenerates to a Rayleigh distribution when the dominant component fades away. The Ricean distribution is given by
