A New ZCT Precoded OFDM System with Improved PAPR

Jeoti , Varun (2010) A New ZCT Precoded OFDM System with Improved PAPR. In: Asia Pacific Conference on Circuits and Systems, 6 - 9 Dec 2010, Kuala Lumpur, Malaysia.

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High Peak to Average Power Ratio (PAPR) is one of the major drawbacks in Orthogonal Frequency Division Multiplexing (OFDM) systems. This paper presents a new Zadoff-Chu Matrix Transform (ZCT) precoding based OFDM (ZCT-OFDM) system for the PAPR reduction. The Matlab® simulations show that, the PAPR of our proposed system reduced to 0dB (constant envelope OFDM system), for the practical implementations of such constant envelope systems, the pulse shaping is necessary to keep out of band radiation low and to meet the transmission spectrum mask requirement. Therefore, in this paper, we also implement the Raised Cosine (RC) pulse shaping with proposed system. From the computer simulations, it is concluded that, the ZCT-OFDM system with pulse shaping, has lower PAPR as compare to Walsh Hadamard Transform (WHT) precoding based OFDM system and OFDM conventional. Another, noticeable fact is that, pulse shaping increase the PAPR of our proposed system.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:4907
Deposited By: Assoc Prof Dr Varun Jeoti
Deposited On:23 Mar 2011 06:27
Last Modified:19 Jan 2017 08:23

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