Paper Info
Title
Joint precoding and power allocation for multiuser transmission in MIMO relay networks
Abstract
This paper proposes a joint precoding and power allocation strategy to maximize the sum rate of multiuser multiple-input multiple-output (MIMO) relay networks. A two-hop relay link working on amplify-and-forward (AF) mode is considered. Precoding and power allocation are designed jointly at the base station (BS). It is assumed that there are no direct links between the BS and users. Under individual power constraints at the BS and relay station, precoders designed based on zero forcing, minimum mean-square error and maximum ratio transmission are derived, respectively. Optimal power allocation strategies for these precoders are given separately. To demonstrate the performance of the proposed strategies, we simulate the uncoded bit error rate performance of the underlined system. We also show the difference of the sum rate of the system with the optimal power allocation strategies and with average power transmission. The simulation results show the advantages of the proposed joint precoding and power allocation strategies as expected. Copyright © 2011 John Wiley & Sons, Ltd.
Year
DOI
Venue
2012
10.1002/dac.1264
Int. J. Communication Systems
Keywords
Field
DocType
multiple‐input multiple‐output (MIMO),precoding,power allocation,amplify‐and‐forward (AF)
Transmission (mechanics),Base station,Mimo relay,Telecommunications,Computer science,Computer network,MIMO,Electronic engineering,Power transmission,Precoding,Relay,Bit error rate
Journal
Volume
Issue
ISSN
25
2
1074-5351
Citations 
PageRank 
References 
15
0.86
27
Authors
3
Name
Order
Citations
PageRank
Jiang Dongmei111515.28
Haixia Zhang236654.02
dongfeng yuan318043.88