Mathematical Description
In a narrowband flat-fading channel with multiple transmit and receive antennas (MIMO), the system is modeled as
where and are the receive and transmit vectors, respectively, and and are the channel matrix and the noise vector, respectively. The noise is often modeled as circular symmetric complex normal with
where the mean value is zero and the noise covariance matrix is known.
Read more about this topic: Channel State Information
Famous quotes containing the words mathematical and/or description:
“The circumstances of human society are too complicated to be submitted to the rigour of mathematical calculation.”
—Marquis De Custine (17901857)
“The type of fig leaf which each culture employs to cover its social taboos offers a twofold description of its morality. It reveals that certain unacknowledged behavior exists and it suggests the form that such behavior takes.”
—Freda Adler (b. 1934)