Design and performance analysis of a novel trellis coded space-time-frequency OFDM transmission scheme
Yükleniyor...
Dosyalar
Tarih
2008-01
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-Blackwell
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this paper a new transmit diversity technique is proposed for wireless communications over frequency selective fading channels. The proposed technique utilises orthogonal frequency division multiplexing (OFDM) to transform a frequency selective fading channel into multiple flat fading subchannels on which first space-frequency coding and then additional space-time coding are applied resulting in a space-time-frequency OFDM (STF-OFDM) scheme. This scheme provides a quasi-orthogonal 4 x 4 transmission matrix but relax the constraint on channel fading parameters to be constant over four time or frequency slots into two time and two frequency slots. The pairwise error probability of the new scheme is evaluated and new code design criteria are obtained to improve the error performance. 64-, 128- and 256-state 4-PSK trellis codes for STF transmission scheme are generated based on these criteria and their frame error performances in an OFDM system are evaluated by computer simulations.
Açıklama
Anahtar Kelimeler
Wireless Communications, Modulation, Space-time block coding (STBC), Block codes, Space time codes, Computer simulation, Fading channels, Space time adaptive processing, Trellis codes, Wireless telecommunication systems, Fading subchannels, Frequency selective fading channels, Frequency slots, Orthogonal frequency division multiplexing
Kaynak
European Transactions on Telecommunications
WoS Q Değeri
Q2
Scopus Q Değeri
N/A
Cilt
19
Sayı
1
Künye
Oğuz, O., Aygölü, H. Ü. & Panayırcı, E. (2008). Design and performance analysis of a novel trellis coded space–time–frequency OFDM transmission scheme. European Transactions on Telecommunications, 19(1), 67-75. doi:10.1002/ett.1214
