DocumentCode :
1911858
Title :
Energy efficient precoding for MIMO cyclic prefixed single carrier communications
Author :
Shrestha, Jeevan ; Stupia, Ivan ; Vandendorpe, Luc
Author_Institution :
ICTEAM Inst., Univ. Catholique de Louvain, Louvain La Neuve, Belgium
fYear :
2015
fDate :
June 28 2015-July 1 2015
Firstpage :
16
Lastpage :
20
Abstract :
This paper addresses the design of energy efficient precoding/decoding strategies for multiple-input multiple-output cyclic prefixed single carrier (MIMO CP-SC) systems with frequency-domain equalization. We opt for eigenbeamforming in the frequency domain for spatial precoding and decoding. We show that eigenbeamforming leads to a simple yet effective maximization of the energy efficiency (EE) of the MIMO CP-SC link. Moreover, the associated power allocation relies on the combination of waterfilling among the spatial streams and a proper distribution of the per-stream allocated power among subcarriers. Numerical results show that, if we account for the efficiency of the high power amplifier (HPA) associated with the peak-to-average power ratio (PAPR), CP-SC can be more energy efficient than orthogonal frequency division multiplexing (OFDM) for moderate to high signal-to-noise (SNR) values.
Keywords :
MIMO communication; array signal processing; cyclic codes; decoding; energy conservation; frequency-domain analysis; precoding; radio links; radiofrequency power amplifiers; telecommunication power management; HPA; MIMO CP-SC system link; MIMO cyclic prefixed single carrier communication; PAPR; SNR value; eigenbeamforming; energy efficient decoding strategy design; energy efficient precoding strategy design; frequency-domain equalization; high-power amplifier; peak-to-average power ratio; power allocation; power distribution; signal-to-noise value; spatial decoding; spatial precoding; Decoding; Frequency-domain analysis; MIMO; Matrix decomposition; OFDM; Optimized production technology; Resource management;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Advances in Wireless Communications (SPAWC), 2015 IEEE 16th International Workshop on
Conference_Location :
Stockholm
Type :
conf
DOI :
10.1109/SPAWC.2015.7226991
Filename :
7226991
Link To Document :
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