Spatial multiplexing in heterogeneous networks with MMSE receiver

Veetil, S T and Kuchi, Kiran and Ganti, R K (2014) Spatial multiplexing in heterogeneous networks with MMSE receiver. In: IEEE Global Communications Conference (GLOBECOM), 8-12 Dec, 2014, Austin, TX.

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In this paper, we analyze the downlink of a multi-antenna heterogeneous cellular network with distance-dependent interference. In particular, we consider open-loop spatial multiplexing (SM) with minimum mean-square estimation (MMSE) receiver for suppressing self-interference as well as other cell interference. Coverage probability and rate distribution are obtained with biased user association rule and inter-cell interference. The results show that using full rate SM at the macro base stations (BSs) degrades the data rate for a large percentage of cell-edge users compared to a low rate SM transmission. Therefore, the cell edge data rate can be improved substantially by reducing the SM rate at the macro BSs while maintaining full SM rate at the pico BSs. The loss in mean spectrum efficiency (SE) caused by the SM rate reduction is shown to be acceptable for the cases of interest.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: MMSE receiver, SM rate reduction, biased user association rule, cell edge data rate improvement, coverage probability, distance-dependent interference, heterogeneous networks, intercell interference, macro base stations, mean spectrum efficiency, minimum mean-square estimation receiver, multiantenna heterogeneous cellular network, open-loop spatial multiplexing, rate distribution, self-interference suppression
Subjects: Others > Electricity
Others > Electronic imaging & Singal processing
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 03 Dec 2015 11:05
Last Modified: 26 Sep 2017 05:32
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