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Author Le Chung Tran ♦ Mertins, A.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2002
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science ♦ Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics
Subject Keyword Ultra wideband communication ♦ MIMO ♦ Diversity methods ♦ Receiving antennas ♦ OFDM ♦ Communication systems ♦ Block codes ♦ Pairwise error probability ♦ Decoding ♦ Transmitting antennas ♦ coding gain ♦ UWB ♦ MB-OFDM ♦ STFC ♦ MIMO ♦ STC ♦ CO STBC ♦ design criteria ♦ diversity order
Abstract This paper proposes a general framework of space-time-frequency codes (STFCs) for multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra-wide band (UWB) communications systems. A great similarity between the STFC MB-OFDM UWB systems and conventional wireless complex orthogonal space-time block code (CO STBC) multiple-input multiple-output (MIMO) systems is discovered. This allows us to quantify the pairwise error probability (PEP) of the proposed system and derive the general decoding method for the implemented STFCs. Based on the theoretical analysis results of PEP, we can further quantify the diversity order and coding gain of MB-OFDM UWB systems, and derive the design criteria for STFCs, namely diversity gain criterion and coding gain criterion. The maximum achievable diversity order is found to be the product of the number of transmit antennas, the number of receive antennas, and the FFT size. We also show that all STFCs constructed based on the conventional CO STBCs can satisfy the diversity gain criterion. Various baseband simulation results are shown for the Alamouti code and a code of order 8. Simulation results indicate the significant improvement achieved in the proposed STFC MB-OFDM UWB systems, compared to the conventional MB-OFDM UWB ones.
Description Author affiliation :: Inst. for Signal Process., Univ. of Luebeck, Lubeck
Author affiliation :: Fac. of Electr. & Electron., Univ. of Commun. & Transp., Hanoi
ISSN 15361276
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-02-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 8
Issue Number 2
Size (in Bytes) 0.98 MB
Page Count 13
Starting Page 701
Ending Page 713

Source: IEEE Xplore Digital Library