Challenges for efficient communication in underwater acoustic sensor networks
ACM SIGBED Review - Special issue on embedded sensor networks and wireless computing
Adaptive MC-CDMA and MC-DS-CDMA receivers for multiuser and multipath fading communications
Proceedings of the 2006 international conference on Wireless communications and mobile computing
State-of-the-art in protocol research for underwater acoustic sensor networks
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
Design of a baseband transceiver for multicarrier CDMA communications
EURASIP Journal on Applied Signal Processing
State of the art in protocol research for underwater acoustic sensor networks
ACM SIGMOBILE Mobile Computing and Communications Review
Journal of Signal Processing Systems
CDMA Power Control Using Channel Prediction in Mobile Fading Channels
WWIC '07 Proceedings of the 5th international conference on Wired/Wireless Internet Communications
A CDMA-based medium access control for underwater acoustic sensor networks
IEEE Transactions on Wireless Communications
Improved ML Channel Estimation for Uplink MC-CDMA Systems in Closely Spaced Multipath Channels
Wireless Personal Communications: An International Journal
CDMA coded power control over rayleigh fading
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 2
IEEE Journal on Selected Areas in Communications - Special issue on optical wireless communications
Adaptive TORC detection for MC-CDMA wireless systems
IEEE Transactions on Communications
Joint data detection and phase recovery for downlink MC-2D-CDMA systems
IEEE Transactions on Communications
Wireless Personal Communications: An International Journal
Detection of multiuser TCM MC-CDMA with TORC over downlink Rayleigh fading channels
Proceedings of the 7th International Conference on Frontiers of Information Technology
A Rao-Blackwellized particle filter for joint channel/symbol estimation in MC-DS-CDMA systems
IEEE Transactions on Communications
MACOM'10 Proceedings of the Third international conference on Multiple access communications
EURASIP Journal on Advances in Signal Processing - Special issue on advanced equalization techniques for wireless communications
Error Rate Analysis of Uplink MC-CDMA Systems under Imperfect Channel Estimation
Wireless Personal Communications: An International Journal
Protocol design issues in underwater acoustic networks
Computer Communications
Joint estimation of correlated multi-carrier DS-CDMA mobile fading channels based on optimal filters
International Journal of Systems, Control and Communications
Performance of 16-state TCM MC-CDMA with various SUD techniques over downlink wireless channels
International Journal of Autonomous and Adaptive Communications Systems
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Multicarrier code-division multiple access (MC-CDMA) combines multicarrier transmission with direct sequence spread spectrum. Different approaches have been adopted which do not assume a perfectly known channel. We examine the forward-link performance of decision-directed adaptive detection schemes, with and without explicit channel estimation, for MC-CDMA systems operating in fast fading channels. We analyze theoretically the impact of channel estimation errors by first considering a simpler system employing a threshold orthogonality restoring combining (TORC) detector with a Kalman channel estimator. We show that the performance deteriorates significantly as the channel fading rate increases and that the fading rate affects the selection of system parameters. We examine the performance of more realistic schemes based on the minimum mean square error (MMSE) criterion using least mean square (LMS) and recursive least square (RLS) adaptation. We present a discussion which compares the decision-directed and pilot-aided approaches and explores the tradeoffs between channel estimation overhead and performance. We find that there is a fading rate range where each method provides a good tradeoff between performance and overhead. We conclude that the MMSE per carrier decision-directed detector with RLS estimation combines good performance in low to moderate fading rates, robustness in parameter variations, and relatively low complexity and overhead. For higher fading rates, however, only pilot-symbol-aided detectors are appropriate.