Abstract
In this letter, multiuser multiple-input multiple-output (MIMO) precoding which achieves the Gaussian broadcast channel (GBC) capacity under the per-antenna power constraint (PAPC) is investigated. In particular, closed-form expressions for both the MIMO precoder and the corresponding sum capacity are presented for the two-user case. We show that the result can also be utilized to provide the two-user capacity expression under the total power constraint (TPC) of transmit antennas.
Original language | English (US) |
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Article number | 5599950 |
Pages (from-to) | 996-998 |
Number of pages | 3 |
Journal | IEEE Communications Letters |
Volume | 14 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2010 |
Keywords
- Broadcast channel
- multiuser MIMO
- per-antenna power constraint
- precoder
- sum capacity.per-antenna power constraint
ASJC Scopus subject areas
- Modeling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering