Constant Envelope Pilot-Based Low-Complexity CFO Estimation in Massive\n MU-MIMO Systems

2016/05/05 by Sudarshan Mukherjee, Mukherjee, Sudarshan, Saif Khan Mohammed +1
Engineering · #Advanced MIMO Systems Optimization #Advanced Power Amplifier Design #Advanced Wireless Communication Techniques #FOS: Computer and information sciences #Information Theory (cs.IT)

paper · pdf · doi:10.48550/arxiv.1605.01501

openalex publication_date 2016/05/05 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/28

Abstract

In this paper we consider a constant envelope pilot signal based carrier\nfrequency offset (CFO) estimation in massive multiple-input multiple-output\n(MIMO) systems. The proposed algorithm performs spatial averaging on the\nperiodogram of the received pilots across the base station (BS) antennas. Our\nstudy reveals that the proposed algorithm has complexity only linear in M\n(the number of BS antennas). Further our analysis and numerical simulations\nalso reveal that with fixed number of users and a fixed pilot length, the\nminimum required transmit pilot power decreases as \(1)/(\√(M)) with\nincreasing M, while maintaining a fixed desired mean squared error (MSE) of\nCFO estimation.\n

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