MIMO enveLope dEtection (sMILE) Testbed
In the frame of the Nonlinear MIMO Systems project, we implement a MIMO envelope detection testbed. Our goal is to demonstrate detection performance of spatially multiplexed streams using multiple amplitude detectors. Furthermore, we wish to implement the channel estimation and ML detection schemes that we have developed in theory. Such a testbed will validate our assumptions and give further insight in practical considerations of MIMO amplitude detection.
The heart of the sMILE testbed is the amplitude detection MIMO receiver. We design identical sMILE nodes (see picture), which individually perform amplitude detection. The custom sMILE nodes implement only the RF front-end of the receiver, up to the A/D Converter, which is done by the oscilloscope. The recorded signals at the oscilloscope are then processed in Matlab off-line. Although the receiver is implemented in a distributed way, we consider this virtual MIMO system as a one-user, collocated MIMO array. RACooN nodes are employed as transmitters.
Further details on the sMILE test bed can be found here.
- Nonlinear MIMO: Affordable MIMO Technology for Wireless Sensor Networks
G. K. Psaltopoulos and A. Wittneben, IEEE Transactions on Wireless Communications, Vol. 9, Iss. 2, pp. 824-832, Feb. 2010.
- Channel Estimation for Very Low Power MIMO Envelope Detectors
G. K. Psaltopoulos and A. Wittneben, IEEE International Conference on Communications, ICC 2010, Cape Town, May 2010.
- Diversity and Spatial Multiplexing of MIMO Amplitude Detection Receivers
G. K. Psaltopoulos and A. Wittneben, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2009, Tokyo, September 2009
- Achievable Rates of Nonlinear MIMO Systems with Noisy Channel State Information
G. K. Psaltopoulos and A. Wittneben, IEEE International Symposium on Information Theory, ISIT 2008, Toronto, July 2008
- On Achievable Rates of MIMO Systems with Nonlinear Receivers
G. K. Psaltopoulos, F. Trösch and A. Wittneben, IEEE International Symposium on Information Theory, ISIT 2007, Nice, June 2007