Sum capacity and TSC bounds in collaborative multibase wireless systems

Authors:
O. Popescu;C. Rose
Affiliations:
Wireless Inf. Network Lab., Rutgers Univ., Piscataway, NJ, USA;-
Venue:
IEEE Transactions on Information Theory
Year:
2006

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Abstract

We consider a wireless system with base stations which collaborate, and derive bounds on sum capacity and total squared correlation for uniform channels between users and bases. The correspondence also investigates structural properties which must be satisfied by user transmit covariance matrices at the optimal sum capacity/total squared correlation (TSC) point, and shows that for multibase systems, maximizing sum capacity and minimizing TSC are, in general, not equivalent problems.