Receiver Design for DCT Based Multicarrier Signals

Zafar, A., He, C., Xiao, P., Imran, M. A. and Cao, A. (2016) Receiver Design for DCT Based Multicarrier Signals. ETSI Workshop on Future Radio Technologies: Air Interfaces, Sophia Antipolis, France, 27-28 Jan 2016.

Abstract

DCT based multicarrier system also known as fast orthogonal frequency division multiplexing (FOFDM) is a promising multicarrier transmission technique that requires half the subcarrier spacing compared to conventional OFDM technique. The signal processing complexity and power consumption of such system is also less due to its real arithmetic operations compared to DFT based system (OFDM) that require complex arithmetic operations. However, unlike OFDM, FOFDM requires a finite impulse response (FIR) front-end pre-filter at the receiver to achieve single-tap equalization for simplifying the receiver design. The receiver design can be further improved using the fact that FOFDM system transmits real valued symbols compared to complex valued symbols in conventional OFDM. This fact enabled us to improve the system performance by exploiting the improperness of such DCT based multicarrier signals using widely linear processing (WLP). In this paper, a novel equalization technique using WLP is proposed to effectively improve the system performance, and it is shown that the proposed FOFDM receiver can provide better estimate of the tran

• Item Type: Conference or Workshop Item
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad
• Authors: Zafar, A., He, C., Xiao, P., Imran, M. A., and Cao, A.
• College/School: College of Science and Engineering > School of Engineering
• Copyright Holders: Copyright © 2016 The Authors
• Publisher Policy: Reproduced with the permission of authors.