udit
Member level 3
Hi
I am working on equal gain combining. In general, the fading channel is represented as h = r*exp(j*theta). The equal gain combiner multiplies the received copies at different antennas by exp(-j*theta), and then adds them all (addition of SNR at each branch).
You can see that for EGC we do not need the knowledge of the channel amplitude 'r' but we still need the knowledge of the channel phase. Do you know any variant of EGC which does not require the knowledge of the channel phase at the receiver. So that I can say that I have a receiver which does not have any Channel state Info (CSI). If the knowledge of the phase is compulsory, then in practical systems how do we estimate it?
In addition, it would be good if you can suggest other diversity combining technique which does not require any CSI at the receiver (MRC is out of proposition, I am not sure about Selection Combining though I will read about it, are there any other techniques)
thanks
I am working on equal gain combining. In general, the fading channel is represented as h = r*exp(j*theta). The equal gain combiner multiplies the received copies at different antennas by exp(-j*theta), and then adds them all (addition of SNR at each branch).
You can see that for EGC we do not need the knowledge of the channel amplitude 'r' but we still need the knowledge of the channel phase. Do you know any variant of EGC which does not require the knowledge of the channel phase at the receiver. So that I can say that I have a receiver which does not have any Channel state Info (CSI). If the knowledge of the phase is compulsory, then in practical systems how do we estimate it?
In addition, it would be good if you can suggest other diversity combining technique which does not require any CSI at the receiver (MRC is out of proposition, I am not sure about Selection Combining though I will read about it, are there any other techniques)
thanks
