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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 7, NO. 8, AUGUST 2008 2871 A Reduced-PAR Opportunistic STBC Scheme for
 

Summary: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 7, NO. 8, AUGUST 2008 2871
A Reduced-PAR Opportunistic STBC Scheme for
Frequency-Selective Channels in the Presence of Frequency Offset
Dandan Wang, Student Member, IEEE, Hlaing Minn, Senior Member, IEEE,
and Naofal Al-Dhahir, Fellow, IEEE
Abstract--Opportunistic space-time block codes (STBC) have
been investigated for flat-fading channels in the literature. In
this paper, we present a novel scheme for integrating them
with orthogonal frequency division multiplexing (OFDM) for
frequency-selective channels with an unequal error protection
capability making it attractive for multimedia and multicasting
applications. In addition, our new scheme optimizes the tradeoff
between coding gain and peak-to-average ratio (PAR) while
minimizing inter-carrier interference in the presence of carrier
frequency offset. We show that our scheme achieves a 2dB
reduction in PAR over the conventional scheme.
Index Terms--STBC, OFDM, PAR, ICI.
I. INTRODUCTION
SPACE-TIME block coding (STBC) has received consid-
erable attention in academic and industrial circles due

  

Source: Al-Dhahir, Naofal - Department of Electrical Engineering, University of Texas at Dallas

 

Collections: Engineering