Joint estimation of channel and iq imbalance in media-based modulation

Shamasundar, B and Chockalingam, A (2019) Joint estimation of channel and iq imbalance in media-based modulation. In: 89th IEEE Vehicular Technology Conference, VTC Spring 2019, 28 April - 1 May 2019, Kuala Lumpur.

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Abstract

In direct conversion radio frequency (RF) front-end architecture, RF impairments such as IQ imbalance (IQI), DC offset, flicker noise, and oscillator leakage can affect the performance. In this work, we study the performance of media-based modulation (MBM), an attractive channel modulation scheme, in the presence of transmit and receiver side IQI and propose efficient compensation techniques. MBM is shown to be more resilient to IQI compared to conventional modulation. A scheme which jointly estimates and compensates the channel and IQI parameters using widely linear least squares estimation is proposed. The proposed scheme is shown to alleviate the transmit and receive IQI-induced BER degradation in MBM. © 2019 IEEE.

Item Type:	Conference Paper
Publication:	IEEE Vehicular Technology Conference
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Modulation, Channel modulation; Compensation techniques; Direct conversion; Front end architecture; I-Q imbalances; Joint estimation; Radio frequencies; Widely-linear processing, Signal receivers
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	13 Dec 2022 05:18
Last Modified:	13 Dec 2022 05:18
URI:	https://eprints.iisc.ac.in/id/eprint/78342

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