Joint Channel and Phase Noise Estimation in MIMO-OFDM Systems

Conference proceedings article

Authors/Editors

Chuma, Joseph

Research Areas

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Publication Details

Author list: Ngebani IM, Zibani I, Matlotse E, Tsamaase K, Chuma JM

Publisher: IEEE

Place: NEW YORK

Publication year: 2016

Number of pages: 2

eISBN: 978-1-5090-2580-0

Languages: English-Great Britain (EN-GB)

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Abstract

The combination of MIMO techniques with OFDM, MIMO-OFDM, is a promising way of achieving high spectral efficiency in wireless communication systems. However, the performance of MIMO-ODFM systems is highly degraded by RF impairments such as phase noise. Similar to the SISO case, phase noise in MIMO-OFDM systems results in a common phase error (CPE) and inter carrier interference (ICI). In this paper the problem of joint channel and phase noise estimation in a system with multiple transmit and receive antennas where each antenna is equipped with its own independent oscillator is tackled. The technique employed makes use of a novel placement of pilot carriers in the preamble and data portion of the MIMO-OFDM frame. Numerical results using a 16 and 64-QAM modulation scheme are provided to illustrate the effectiveness of the proposed scheme for MIMO-OFDM systems.

Keywords

Common Phase Error (CPE), Inter Carrier Interference (ICI), LS, MIMO-OFDM, MMSE, Phase Noise

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