EURASIP Journal on Wireless Communications and Networking - Special issue on innovative signal transmission and detection techniques for next generation cellular CDMA systems
A low-complexity blind multiuser receiver for long-code CDMA
EURASIP Journal on Wireless Communications and Networking - Special issue on innovative signal transmission and detection techniques for next generation cellular CDMA systems
Blind multiuser detection for long-code CDMA systems with transmission-induced cyclostationarity
EURASIP Journal on Wireless Communications and Networking - Special issue on advanced signal processing algorithms for wireless communications
Blind channel estimation for MC-CDMA systems with long spreading codes
Signal Processing
EURASIP Journal on Wireless Communications and Networking
EURASIP Journal on Wireless Communications and Networking
Signal processing advances for 3G WCDMA: from rake receivers to blind techniques
IEEE Communications Magazine
Communications over the best singular mode of a reciprocal MIMO channel
IEEE Transactions on Communications
Training-feedback tradeoff in closed-loop synchronous DS-CDMA systems with adaptive user sequences
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Hi-index | 35.68 |
In CDMA systems with long codes, the users' signatures change in each bit period, impeding the estimation of the time-invariant multipath parameters. In this paper, correlation-matching methods are employed to blindly estimate those multipath parameters. For given code sequences, the output correlation matrix (parameterized by the unknown channel coefficients) is compared with its instantaneous approximation. By minimizing the Frobenius norm of the resulting error matrix, the channel parameters can be estimated up to a complex scalar ambiguity. Both batch and adaptive algorithms are derived. Under the assumption of i.i.d. code sequences, identifiability up to a complex scalar ambiguity for each channel is guaranteed, and the asymptotic convergence of the proposed algorithm is established. Furthermore, step-size selection for the adaptive version is investigated. When only the code sequence of the user of interest is available, a single user receiver is also derived. Simulation results verify those claims and provide comparisons with other methods