Journal ArticleDOI
Space-frequency-time turbo coded modulation
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TLDR
A new bandwidth and power efficient signaling scheme is proposed that achieves high data rates over wideband radio channels exploiting the bandwidth efficient OFDM modulation, multiple transmit and receive antennas and large frequency selectivity offered in typical low mobility indoor environments.Abstract:
A new bandwidth and power efficient signaling scheme is proposed that achieves high data rates over wideband radio channels exploiting the bandwidth efficient OFDM modulation, multiple transmit and receive antennas and large frequency selectivity offered in typical low mobility indoor environments. Owing to its maximum transmit diversity gain and large coding gain, space-frequency-time turbo coded modulation strongly outperforms other space-frequency-time coding schemes proposed in literature. A simple way of combining space-frequency-time coding with OFDM delay diversity for cost effective exploitation of more than two transmit antennas is also proposed in this paper.read more
Citations
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Journal ArticleDOI
An efficient space-frequency coded OFDM system for broadband wireless communications
Yi Gong,Khaled Ben Letaief +1 more
TL;DR: It is shown that the proposed space- frequencies coded orthogonal frequency-division multiplexing (OFDM) system can efficiently achieve the full diversity provided by the fading channel with low trellis complexity, while for traditional space-frequency coded OFDM systems, they need to design space-time trell is codes with high trellIS complexity to exploit the maximum achievable diversity order.
Journal ArticleDOI
Space-time turbo trellis codes for two, three, and four transmit antennas
TL;DR: It is shown that the new space-time turbo trellis codes with 4-phase-shift keying and 8-PSK for two, three, and four transmit antennas in slow and fast fading channels achieve better performance than previously designed codes.
MIMO OFDM for wireless LANs
TL;DR: A fundamental and intuitive explanation is given of the spectral efficiency and stability of a wireless MIMO system in rich-scattering environments such as indoor environments and it is shown that Maximum Likelihood Detection (MLD) outperforms the other schemes.
Patent
Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems
Georgios B. Giannakis,Xiaoli Ma +1 more
TL;DR: In this article, a wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols, and a modulator outputs a wireless signal in accordance with the blocks.
Proceedings ArticleDOI
Receiver design for MIMO-OFDM transmission over time variant channels
TL;DR: A receiver design for space-time block coded MIMO-OFDM transmission over frequency selective time-variant channels is considered, which shows that the receiver outperforms other least-squares based iterative receivers.
References
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Journal ArticleDOI
Space-time codes for high data rate wireless communication: performance criterion and code construction
TL;DR: In this paper, the authors consider the design of channel codes for improving the data rate and/or the reliability of communications over fading channels using multiple transmit antennas and derive performance criteria for designing such codes under the assumption that the fading is slow and frequency nonselective.
Proceedings ArticleDOI
Space-time coded OFDM for high data-rate wireless communication over wideband channels
TL;DR: A space-time coded orthogonal frequency division multiplexing (OFDM) modulated physical layer is designed which combines coding and modulation and is attractive for delay-sensitive applications.
Book
Space Time Coding for Broadband Wireless Communications
TL;DR: This chapter discusses the evolution of Wireless Communication Systems, and the challenges of designing and implementing ST Codes based on the FDFR Code Design.
Proceedings ArticleDOI
Space-time code design in OFDM systems
B. Lu,Xiaodong Wang +1 more
TL;DR: Compared with the conventional space-time trellis codes, the proposed STC's significantly improve the performance by efficiently exploiting both the spatial diversity and the frequency-selective-fading diversity.
Journal ArticleDOI
Improved space-time coding for MIMO-OFDM wireless communications
TL;DR: Improved space-time coding for multiple-input multiple-output orthogonal frequency division multiplexing is studied for wireless systems using QPSK modulation for four transmit and four receive antennas and a 256-state code is shown to perform within 3 dB of outage capacity.