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Error Performance Analysis of Clipped Alamouti Space-Time Coded OFDM Systems
 

Summary: Error Performance Analysis of Clipped Alamouti
Space-Time Coded OFDM Systems
Himal A. Suraweera and Jean Armstrong
Department of Electrical and Computer Systems Engineering
Monash University
Melbourne Victoria 3800, Australia
E-mail: {himal.suraweera, jean.armstrong}@eng.monash.edu.au
Abstract-- In this paper we investigate the performance of
clipped Alamouti space-time coded (STC) orthogonal frequency
division multiplexing (OFDM) systems. The high peaks in STC-
OFDM signals are clipped to limit the peak-to-average power
ratio (PAPR). In STC-OFDM and OFDM, clipping can achieve
significant PAPR reduction while maintaining a low symbol error
rate (SER). Previous studies on OFDM have concluded that the
effect of channel fading on clipping noise must be considered for
an accurate error performance analysis. We extend this further
to incorporate STC-OFDM systems and jointly study the impact
of channel fading and receiver combining on clipping noise. At
the STC-OFDM receiver, effective clipping noise governing the
signal-to-noise ratio has different characteristics compared to the

  

Source: Armstrong, Jean - Department of Electrical and Computer Systems Engineering, Monash University

 

Collections: Engineering