Name
Abstract | ||
|---|---|---|
Recent results have shown the benefits of widely linear precoding (WLP) in the MIMO interference channel (MIMO IC) assuming that all transmitters can follow the same strategy. Motivated by a transitional scenario where legacy linear transmitters coexist with widely linear ones, this work investigates the general K-user MIMO IC in a heterogeneous (linear and widely linear) transmitter deployment. In particular, we address the maximization of the weighted sum-rate (WSR) for (widely) linear transmit filters design through the use of the complex-valued formulation. Since the maximum WSR problem is non-convex, and thus difficult to be solved, we formulate an equivalent minimum weighted mean square error problem that allows deriving closed-form expressions for (widely) linear transceivers. Then an iterative procedure is proposed, which is proven to reach a stationary point of the maximum WSR problem. Simulations show that the proposed procedure allows increasing the sum-rate as compared to coordinated linear transceiver schemes. The gains are larger and significant in two different nonexclusive conditions: as the interference level increases or when the number of antennas is low. |
Year | DOI | Venue |
|---|---|---|
2016 | 10.1109/TSP.2015.2489604 | IEEE Trans. Signal Processing |
Keywords | Field | DocType |
MIMO communication,iterative methods,linear codes,mean square error methods,precoding,radio transceivers,radiofrequency interference,MIMO interference channel,MSE,WLP,closed-form expressions,complex-valued formulation,coordinated linear transceiver schemes,equivalent minimum weighted mean square error problem,general k-user MIMO IC,heterogeneous transmitter deployment,interference level,iterative procedure,legacy linear transmitters,linear transmit filters design,maximum WSR problem,nonexclusive conditions,weighted sum-rate,widely linear precoding,widely linear transceivers,Heterogeneous transceivers,MIMO interference channel,improper Gaussian signaling,weighted sum-rate maximization,widely linear estimation,widely linear precoding | Transmitter,Transceiver,Expression (mathematics),Control theory,MIMO,Stationary point,Interference (wave propagation),Maximization,Mathematics,Precoding | Journal |
Volume | Issue | ISSN |
64 | 3 | 1053-587X |
Citations | PageRank | References |
15 | 0.56 | 23 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Sandra Lagen | 1 | 78 | 11.36 |
| Adrian Agustin | 2 | 487 | 53.41 |
| J. Vidal | 3 | 636 | 66.15 |