Block Diagonal Differential Space---Time---Frequency Codes for Four Transmit Antennas
Wireless Personal Communications: An International Journal
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Space-frequency block code with matched rotation for MIMO-OFDM system with limited feedback
EURASIP Journal on Advances in Signal Processing - Multiuser MIMO Transmission with Limited Feedback, Cooperation, and Coordination
Performance evaluation of code-spread OFDM using Vandermonde spreading
RWS'09 Proceedings of the 4th international conference on Radio and wireless symposium
Space-frequency linear dispersion codes for single carrier-frequency domain equalization
IEEE Transactions on Wireless Communications
A systematic design of full diversity multiuser space-frequency codes
IEEE Transactions on Signal Processing
Space-frequency-coded MIMO OFDM receivers based on Gaussian message passing
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Bandwidth efficiency of practical MIMO-OFDM systems with adaptive MIMO schemes
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Performance gain of space-time-frequency concatenated LDPC codes
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Matched rotation precoding: a new paradigm in space-frequency coding
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
A novel cyclic shift interleaver design for linearly precoded OFDM systems
IEEE Transactions on Wireless Communications
A Rate-1 Space-Time Diversity Method for Rotated 4-QAM Constellations
Wireless Personal Communications: An International Journal
Performance Analysis of the Cooperative ZP-OFDM: Diversity, Capacity and Complexity
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Hi-index | 754.84 |
A general space-frequency (SF) block code structure is proposed that can guarantee full-rate (one channel symbol per subcarrier) and full-diversity transmission in multiple-input multiple-output-orthogonal frequency-division multiplexing (MIMO-OFDM) systems. The proposed method can be used to construct SF codes for an arbitrary number of transmit antennas, any memoryless modulation and arbitrary power-delay profiles. Moreover, assuming that the power-delay profile is known at the transmitter, we devise an interleaving method to maximize the overall performance of the code. We show that the diversity product can be decomposed as the product of the "intrinsic" diversity product, which depends only on the used signal constellation and the code design, and the "extrinsic" diversity product, which depends only on the applied interleaving method and the power delay profile of the channel. Based on this decomposition, we propose an interleaving strategy to maximize the "extrinsic" diversity product. Extensive simulation results show that the proposed SF codes outperform the previously existing codes by about 3-5 dB, and that the proposed interleaving method results in about 1-3-dB performance improvement compared to random interleaving.