Channel Estimation in MIMO Ad Hoc Network with Binomial Node Distribution and Transmit Antenna Selection
نویسندگان
چکیده
Abstract— Reliable channel estimation is an essential task in the development of receivers for multiple input multiple output (MIMO) finite ad hoc networks. The major problem in the estimation of channel coefficients in a MIMO ad hoc network is the interference from the other nodes. In this paper, channel estimation is performed for a finite MIMO ad hoc network where transmitter employs antenna selection. The spatial node distribution in a finite network, containing finite number of nodes in a finite region is characterized using the binomial point process. Linear Minimum Mean Square Error (LMMSE) algorithm is developed for estimating channel coefficients using training sequences. The algorithm uses the spatial correlation of receive antennas. The MSE performance of proposed LMMSE channel estimator for MIMO ad hoc network in the interference limited environment is analysed through simulations. KeywordBinomial Point Process, Guard Zone, Linear Minimum Mean Square Error, Multiple Input Multiple Output (MIMO), Transmit Antenna Selection.
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