Channel estimation and energy optimization for LTE and LTEA MU-MIMO Uplink with RF transmission power consumption
Volume: 4 - Issue: 02 - Date: 01-02-2015
Approved ISSN: 2278-1412
Published Id: IJAECESTU236 | Page No.: 405-408
Author: Harsh Shrivastava
Co- Author: Rinkoo Bhatia
Abstract:-Multi-user multi-input multi-output (MU-MIMO) transmission is being provided by in
the uplink of the 3GPP LTE and LTE-A standards. To minimize the interference among different
antenna channels care must be exercised in channel estimation according to the property of
reference signals (RSs). When user equipments (UEs) are allocated narrow transmission bands
channel estimation methods may yield relatively high inter-channel interference but typical DFTand DCT-based channel estimation methods may have low complexity. Methods that have much
higher computational requirements often attain better channel separation. To minimize an L1 norm
of error, an MU channel estimation technique is being proposed in this paper. Linear minimum
mean-square error (LMMSE) that has good numerical properties does not need second-order
statistics as it yields a performance between the least-square (LS), the DFT, and the LMMSE
techniques.
Key Words:-Channel estimation, MU-MIMO, uplink, LTE, L1- norm, OFDM
Area:-Engineering
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