DocumentCode :
87079
Title :
Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays
Author :
Rusek, F. ; Persson, D. ; Buon Kiong Lau ; Larsson, E.G. ; Marzetta, T.L. ; Edfors, O. ; Tufvesson, F.
Author_Institution :
Dept. of Electr. & Inf. Technol., Lund Univ., Lund, Sweden
Volume :
30
Issue :
1
fYear :
2013
fDate :
Jan. 2013
Firstpage :
40
Lastpage :
60
Abstract :
Multiple-input multiple-output (MIMO) technology is maturing and is being incorporated into emerging wireless broadband standards like long-term evolution (LTE) [1]. For example, the LTE standard allows for up to eight antenna ports at the base station. Basically, the more antennas the transmitter/receiver is equipped with, and the more degrees of freedom that the propagation channel can provide, the better the performance in terms of data rate or link reliability. More precisely, on a quasi static channel where a code word spans across only one time and frequency coherence interval, the reliability of a point-to-point MIMO link scales according to Prob(link outage) ` SNR-ntnr where nt and nr are the numbers of transmit and receive antennas, respectively, and signal-to-noise ratio is denoted by SNR. On a channel that varies rapidly as a function of time and frequency, and where circumstances permit coding across many channel coherence intervals, the achievable rate scales as min(nt, nr) log(1 + SNR). The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time [2].
Keywords :
Long Term Evolution; MIMO communication; channel coding; radio links; receiving antennas; telecommunication channels; telecommunication network reliability; transmitting antennas; LTE; Prob; antenna ports; base station; channel coherence intervals; code word spans; degrees of freedom; frequency coherence interval; link outage; link reliability; long-term evolution; multiple-input multiple-output; multiuser systems; point-to-point MIMO link; propagation channel; quasi static channel; receive antennas; receiver; signal-to-noise ratio; transmit antennas; transmitter; wireless broadband standards; MIMO; Signal to noise ratio; Telecommunication network management; Telecommunication network reliability; Time frequency analysis; Wireless networks;
fLanguage :
English
Journal_Title :
Signal Processing Magazine, IEEE
Publisher :
ieee
ISSN :
1053-5888
Type :
jour
DOI :
10.1109/MSP.2011.2178495
Filename :
6375940
Link To Document :
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