Title :
The Application of Spatial Shifting for Peak-to-Average Power Ratio Reduction in MIMO OFDM Systems
Author :
Schenk, Tim C W ; Smulders, Peter F M ; Fledderus, Erik R.
Author_Institution :
Radiocommunication Chair, Eindhoven Univ. of Technol.
Abstract :
This paper investigates the application of spatial shifting (SS) of partial transmit sequences (PTSs) in multiple-input multiple-output OFDM. The technique rearranges the transmit (TX) vector in such a way that subparts are transmitted on those TX branches that result in the lowest overall peak-to-average power ratio. The application of different subcarrier grouping schemes and the combination of SS with phase shifting (PS) of the PTSs is investigated. Furthermore, a transparent extension of the techniques, without extra signalling overhead, is proposed. Numerical results prove the effectiveness of the SS and the combined SS/PS approach
Keywords :
MIMO systems; OFDM modulation; antenna arrays; telecommunication signalling; MIMO OFDM systems; multiple-input multiple-output; partial transmit sequences; peak-to-average power ratio reduction; signalling overhead; spatial shifting; transmit vector; Baseband; Costs; Distortion; High power amplifiers; MIMO; OFDM; Partial transmit sequences; Peak to average power ratio; Signal representations; Time domain analysis;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683169
