Title :
Optimality of single-carrier zero-padded block transmissions
Author :
Wang, Zhengdao ; Ma, Xiaoli ; Giannakis, Georgias B.
Author_Institution :
Dept. Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
We consider the class of linear precoded (LP) orthogonal frequency division multiplexing (OFDM) systems. We first show that single-carrier zero-padded transmissions, termed ZP-only, can be viewed as a special case of LP-OFDM. By resorting to the pair-wise error probability analysis, we establish the optimality of ZP-only among the LP-OFDM class in terms of its performance in random frequency-selective channels. It is shown that ZP-only enjoys maximum diversity and coding gains. We also consider various decoding options for ZP-only, and compare them in terms of performance and complexity.
Keywords :
OFDM modulation; Rayleigh channels; communication complexity; decoding; diversity reception; error statistics; linear codes; modulation coding; optimisation; BER-SNR curves; LP-OFDM; ZP-only; coding gain; complexity; decoding; diversity gain; linear precoded OFDM systems; optimisation; orthogonal frequency division multiplexing; pair-wise error probability analysis; performance; random Rayleigh fading channels; random frequency-selective channels; single-carrier zero-padded block transmissions; Convolution; Decoding; Error analysis; Fading; Galois fields; Intersymbol interference; OFDM; Pairwise error probability; Performance analysis; Transmitters;
Conference_Titel :
Wireless Communications and Networking Conference, 2002. WCNC2002. 2002 IEEE
Print_ISBN :
0-7803-7376-6
DOI :
10.1109/WCNC.2002.993346
