Can anyone explain in detail on Polarisation Diversity?
ravi_195 05-May-2008 10:51:45 AM

Comments


It is Diversity transmission and reception wherein the same information signal is transmitted and received simultaneously on orthogonally polarized waves with fade-independent propagation characteristics.
Posted by waqqas1


The use of polarization diversity process requires the derivation of a mathematical system model to allow evaluating the effects of this process, employed by a jammer or by a threatened radar, upon jamming effectiveness. The system model consists of two orthogonal linear antennas controlled by a random process in amplitude and phase. The expected value of the received power due to interference is related to the autocorrelation of the received signal. The received power is obtained in the frequency domain from the spectral behavior of the total polarization diversity processes employed by both the jammer and radar and the spectral characteristics of the transmitting and receiving systems. The spectral behavior of the total polarization diversity process if constructed by the convolution between the polarization diversity processes of both the jammer and radar. The spectrum of the polarization diversity is spread in a convolution manner by the transmitter spectrum. This convolved spectrum contributes to the expected value of the received power only within the bandwidth of the receiving system. It is concluded that for several typical scenarios polarization diversity is an effective jamming technique

Posted by gsmxprt


"It is basically Diversity transmission and reception wherein the same information signal is transmitted and received simultaneously on orthogonally polarized waves with fade-independent propagation characteristics."
Posted by sagitraz


What I understand is achieving diversity by using two polarized antennas positioned in 90 degree angle.
Posted by ykkim



Posted: 05-May-2008 09:47:49 PM By: ykkim

What I understand is achieving diversity by using two polarized antennas positioned in 90 degree angle.

Posted: 06-May-2008 01:39:21 AM By: sagitraz

"It is basically Diversity transmission and reception wherein the same information signal is transmitted and received simultaneously on orthogonally polarized waves with fade-independent propagation characteristics."

Posted: 21-May-2008 03:13:51 AM By: gsmxprt

The use of polarization diversity process requires the derivation of a mathematical system model to allow evaluating the effects of this process, employed by a jammer or by a threatened radar, upon jamming effectiveness. The system model consists of two orthogonal linear antennas controlled by a random process in amplitude and phase. The expected value of the received power due to interference is related to the autocorrelation of the received signal. The received power is obtained in the frequency domain from the spectral behavior of the total polarization diversity processes employed by both the jammer and radar and the spectral characteristics of the transmitting and receiving systems. The spectral behavior of the total polarization diversity process if constructed by the convolution between the polarization diversity processes of both the jammer and radar. The spectrum of the polarization diversity is spread in a convolution manner by the transmitter spectrum. This convolved spectrum contributes to the expected value of the received power only within the bandwidth of the receiving system. It is concluded that for several typical scenarios polarization diversity is an effective jamming technique

Posted: 31-December-2008 07:16:32 AM By: waqqas1

It is Diversity transmission and reception wherein the same information signal is transmitted and received simultaneously on orthogonally polarized waves with fade-independent propagation characteristics.