Structured multiuser channel estimation for block-synchronous DS

Uplink channel estimation for a block-synchronous chip-asynchronous DS/CDMA system as proposed for the time-division duplex option of third-generation cellular systems is considered. Training midambles are employed for joint channel estimation of all users. The standard unstructured approach based o...

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Vydáno v:	IEEE Transactions on communications 49, 9 (2001).
Hlavní autor:	Caire, G.
Médium:	Článek
Jazyk:	English
Témata:	Block-synchronous DS/CDMA. Block-synchronous chip-asynchronous DS/CDMA system. Channel estimation mean-squared error. Joint channel estimation. Linear RINSE detection. Low-complexity estimator. Maximum delay-spread. Maximum-likelihood. Path delays. Perfect root-of-unity sequences. Signal-to-interference plus noise ratio. Single-user matched filtering. Structured estimator. Structured multiuser channel estimation. Third-generation cellular systems. Time-division duplex option. Training midambles. Training sequences. Transmit chip-shaping pulse. Unstructured estimator. Uplink channel estimation. User channels.