Channel Estimation for Very Low Power MIMO Envelope Detectors


Georgios Psaltopoulos and Armin Wittneben


IEEE International Conference on Communications, ICC 2010, Cape Town, May 2010.

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We consider a MIMO system for very low-power applications, e.g, sensor networks, where the receiver employs an envelope detector at each receive antenna. Properties of such systems have been studied in [1], [2] and [3], where the channel was considered to be perfectly known at the receiver, or a linear channel estimation model was used. In this paper we propose a very simple channel estimation scheme, which allows the non-coherent MIMO envelope detector to estimate all required channel knowledge necessary for maximum likelihood detection. In contrast to linear MIMO system, complete knowledge of the channel coefficients is not required.

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