Weighting Vector in MRC - need guidance

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saeddawoud

Joined: 27 Apr 2007
Posts: 156
Helped: 3

08 Jul 2009 11:54 Weighting Vector in MRC

Hello,

Suppose that the received vector at the input of a MRC combiner is:

$3$\mathbf{Y}=\mathbf{h}_B\,G(h_A\,s+n_A)+\mathbf{n}$

and suppose that all noises power are the same. What is the weighting vector?

Best regards

Last edited by saeddawoud on 09 Jul 2009 9:30; edited 1 time in total

rmf_rncperf

Joined: 05 Jul 2009
Posts: 12
Location: usa

09 Jul 2009 8:56 Re: Weighting Vector in MRC

I can help you if you explain the variables in your equation.

R

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saeddawoud

Joined: 27 Apr 2007
Posts: 156
Helped: 3

09 Jul 2009 9:29 Re: Weighting Vector in MRC

rmf_rncperf wrote:

I can help you if you explain the variables in your equation.

R

I have a dual-hop system, where the communication between a source and a destination is facilitated by an intermmedate node (relay). The first hop is a Single-Input Single-Output (SISO) link, and the second hop is a Single-Input Multiple-Output (SIMO) link.
Then:
$3$Y$ : is an $3$N\times 1$ received vector at the input of the destination from the relay.
$3$\mathbf{h}$ : is an $3$N\times 1$ channel column vector between the relay and the destination.
$3$\mathbf{n}$ : is an $3$N\times 1$ AWGN column vector with zero-mean vector and co-variance matrix $3$N_{0,2}\,I_N$ , where $3$I_N$ is an $3$N\times N$ identity matrix.
$3$h_A$ : is the channle coefficient between the source and the relay.
$3$n_A$ : is an AWGN at the input of the relay with zero-mean and variance $3$N_{0,1}$
$3$G$ : is the amplification factor of the relay node.

Thanks in advance