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http://dx.doi.org/10.7840/kics.2015.40.8.1485

Pilot Assignment Algorithm for Uplink Massive MIMO Systems  

Jang, Seokju (School of Electrical Engineering, Korea University)
Kong, Han-Bae (School of Electrical Engineering, Korea University)
Lee, Inkyu (School of Electrical Engineering, Korea University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.40, no.8, 2015 , pp. 1485-1491 More about this Journal
Abstract
This paper introduces a new pilot assignment algorithm for uplink Massive multiple-input multiple-output (MIMO) systems. Since the conventional pilot assignment algorithm has the performance degradation compared to the optimal algorithm which performs the exhaustive search, we propose a new pilot assignment algorithm using Pre-determined Interference and Pre-determined Desired-term techniques. The proposed algorithm has the low complexity and guarantees negligible performance loss compared to the optimal algorithm. Simulation result verifies that the proposed algorithm achieves a large performance gain over the conventional algorithm.
Keywords
Pilot contamination; Pilot assignment; Massive multiple-input Multiple-output(MIMO); Channel estimation; Mean square error;
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