Transmit diversity at the cell border using smart base stations
EURASIP Journal on Wireless Communications and Networking
Design and performance of cyclic delay diversity in UWB-OFDM systems
EURASIP Journal on Wireless Communications and Networking
Cyclic delay diversity with frequency domain turbo equalization for uplink fast fading channels
IEEE Communications Letters
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
A novel CDD-OFDM scheme with pilot-aided channel estimation
IEEE Transactions on Wireless Communications
Time-domain transmit beamforming for MIMO-OFDM systems with finite rate feedback
IEEE Transactions on Communications
Bit-interleaved coded DPSK with cyclic delay diversity: design and analysis
IEEE Transactions on Wireless Communications
Full-rate cooperative communications with spatial diversity for half-duplex uplink relay channels
IEEE Transactions on Wireless Communications
Robust transmit processing for BICM-OFDM systems
IEEE Transactions on Wireless Communications
On the parameter choice for cyclic delay diversity based precoding with spatial multiplexing
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Robust cyclic space-frequency filtering for BICM-OFDM with outdated CSIT
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Coordinated multi-cell space frequency block coding based on inter-cell large cyclic delay
IEEE Communications Letters
Group-orthogonal code-division multiplex: a physical-layer enhancement for IEEE 802.11n networks
EURASIP Journal on Wireless Communications and Networking
Spectral efficient cooperative diversity technique with multi-layered modulation
IEEE Transactions on Communications
Cellular Downlink Performance with Covariance-CSIT-Based MIMO Precoding
Wireless Personal Communications: An International Journal
Cooperative Relaying Scheme for Orthogonal Frequency and Code Division Multiple Access Uplink System
Wireless Personal Communications: An International Journal
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We consider cyclic delay diversity in OFDMA. Cyclic delay diversity is an elegant way to obtain spatial diversity in an FEC coded OFDM system without exceeding the guard interval. We first address the problem of choosing the cyclic delays and propose a new robust design rule which enables to pick up the full spatial and frequency diversity which is inherent in a frequency-selective MIMO channel. Our choice of cyclic delays has consequences for the interleaving and multiple access scheme since the spatial diversity appears to be transformed into frequency diversity between neighbouring subcarriers. Therefore, a system with a conventional block frequency interleaver will fail to exploit the spatial diversity. We propose an interleaving and multiple access strategy which guarantees that all users obtain the maximum possible diversity advantage using FEC codes with a limited constraint length. Furthermore, we provide a performance comparison to transmit diversity from orthogonal designs