For Nr = 1, the transmission on each feeder link reduces
to single-stream beamforming, with transmitted symbol xB,i
and beamformer uB,i ∈ CNB×1 on feeder link i. We also
use the row vectors ˜hBR,i and ˜hRR,i,l, to replace ˜HBR,i and
˜H
RR,i,l involved in (8), respectively.With the use of (4) and (7)
explicitly in problem (8), we obtain the following equivalent
For Nr = 1, the transmission on each feeder link reducesto single-stream beamforming, with transmitted symbol xB,iand beamformer uB,i ∈ CNB×1 on feeder link i. We alsouse the row vectors ˜hBR,i and ˜hRR,i,l, to replace ˜HBR,i and˜HRR,i,l involved in (8), respectively.With the use of (4) and (7)explicitly in problem (8), we obtain the following equivalent
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