On the performance of pre-transformed space-time block coded OFDM systems

Yan Wu, C.K. Ho, S. Sun

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

1 Citaat (Scopus)
64 Downloads (Pure)

Samenvatting

In a previous work by Wu et ah, it is shown that the performance of the pre-transformed space-time block coded orthogonal frequency division multiplexing (PT-STBC-OFDM) system has much superior performance compared to the normal STBC-OFDM system. In this paper, we present an analytical study on the bit error rate (BER) of the PT-STBC-OFDM system. We derive the noise distribution of PT-STBC-OFDM system and hence, obtain the BER numerically. We also derived two closed- form BER approximations for the PT-STBC-OFDM system at two different SNR regions. We show that by adding the PT operation, the system has better diversity compared to STBC-OFDM system at the medium SNR region. Using linear detection, the diversity of both systems at the high SNR regions are the same. Moreover, we demonstrate that at high SNR, a PT-STBC- OFDM system of transform size N requires 5log10(N) dB less SNR to achieve the same BER as without PT.
Originele taal-2Engels
TitelProceedings of IEEE Wireless Communication and Networking Conference (WCNC), 5-8 April 2009, Budapest, Hungary
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's1-5
ISBN van geprinte versie978-1-4244-2947-9
DOI's
StatusGepubliceerd - 2009

    Vingerafdruk

Citeer dit

Wu, Y., Ho, C. K., & Sun, S. (2009). On the performance of pre-transformed space-time block coded OFDM systems. In Proceedings of IEEE Wireless Communication and Networking Conference (WCNC), 5-8 April 2009, Budapest, Hungary (blz. 1-5). Piscataway: Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/WCNC.2009.4917861