Sequential and Incremental Precoder Design for Joint Transmission Network MIMO Systems With Imperfect Backhaul

In this paper, we propose a sequential and incremental precoder design for downlink joint transmission (JT) network multiple-input-multiple-output (MIMO) systems with imperfect backhaul links. The objective of our design is to minimize the maximum of the substream mean square errors, which dominates...

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Vydáno v:IEEE transactions on vehicular technology Ročník 61; číslo 6; s. 2490 - 2503
Hlavní autoři: Ding, Ming, Zou, Jun, Yang, Zeng, Luo, Hanwen, Chen, Wen
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.07.2012
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
Allocations
Applied sciences
Bit error rate
Circuit properties
Coding, codes
Computer simulation
Delay
Design engineering
Downlink
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Imperfect Backhaul
Information, signal and communications theory
Interference
joint transmission (JT)
Joints
Links
Mean square errors
Mean square values
MIMO
network multiple-input multiple-output (MIMO)
Networks
Optimization
precoding
Signal and communications theory
Signal convertors
Stations
Studies
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Valuation and optimization of characteristics. Simulation
Performance evaluation
MIMO system
Autonomous system
joint transmission (JT)
Bit error rate
Coding circuit
Base station
network multiple-input multiple-output (MIMO)
Downlink
Iterative method
precoding
Algorithm
Power allocation
Optimization
Mean square error
Networked system
Coding
Transportation network
Data transmission network
System simulation
Pretreatment
Imperfect Backhaul
ISSN:0018-9545, 1939-9359
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Popis
Shrnutí:In this paper, we propose a sequential and incremental precoder design for downlink joint transmission (JT) network multiple-input-multiple-output (MIMO) systems with imperfect backhaul links. The objective of our design is to minimize the maximum of the substream mean square errors, which dominates the average bit error rate (BER) performance of the system. In the proposed scheme, we first optimize the precoder at the serving base station (BS) and then sequentially optimize the precoders of nonserving BSs in the JT set according to the descending order of their probabilities of participating in the JT. The BS-wise sequential optimization process can improve system performance when some BSs have to temporarily quit the JT operations because of poor instant backhaul conditions. In addition, the precoder of an additional BS is derived in an incremental way, i.e., the sequentially optimized precoders of the previous BSs are fixed, and thus, the additional precoder plays an incremental part in multi-BS JT operations. An iterative algorithm is designed to jointly optimize the substream precoder and substream power allocation for each additional BS in the proposed sequential and incremental optimization scheme. Simulations show that, under the practical backhaul link conditions, our scheme significantly outperforms the autonomous global precoding scheme in terms of BER performance.
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ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2012.2195690