Abstract
In this paper, we develop the optimal source precoding matrix and relay amplifying matrices for non-regenerative multiple-input multiple-output (MIMO) relay communication systems with parallel relay nodes using the projected gradient (PG) approach. We show that the optimal relay amplifying matrices have a beamforming structure. Exploiting the structure of relay matrices, an iterative joint source and relay matrices optimization algorithm is developed to minimize the mean-squared error (MSE) of the signal waveform estimation at the destination using the PG approach. The performance of the proposed algorithm is demonstrated through numerical simulations.
| Original language | English |
|---|---|
| Article number | 151 |
| Journal | EURASIP Journal on Wireless Communications and Networking |
| Volume | 2014 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 15 Sept 2014 |
Keywords
- Beamforming
- MIMO relay
- Non-regenerative relay
- Parallel relay network
- Projected gradient
ASJC Scopus subject areas
- Urology