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OFDM Performance with Odd-Even Quantisation in Cartesian Delta-Sigma Upconverters

Sirmayanti, Sirmayanti (2013) OFDM Performance with Odd-Even Quantisation in Cartesian Delta-Sigma Upconverters. In: 2012 6th International Conference on Signal Processing and Communication Systems, 12-14 December 2012, Gold Coast, QLD, Australia.

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Abstract

This paper studies the odd-quantisation technique when subject to OFDM input signals in a Cartesian Delta Sigma upconverter. The results will be compared to the even-quantisation method of [9]. The overall performance of the odd-quantisation scheme has about 5dB reduced adjacent channel power (ACP) compared to the even-quantisation scheme. The smaller first quantisation step results in lower quantisation noise for small signals, leading to a lower noise floor. When the signal is frequency offset, a number of distortions become visible in the spectrum. The third harmonic is the biggest distortion contributor followed by the image. Interestingly, the overall better noise performance of the odd-quantisation scheme does not improve the distortion spectra. Best performance occurs when frequency offsetting is avoided.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Jurusan Teknik Elektro > D4 Teknologi Rekayasa Jaringan Telekomunikasi
Depositing User: Ms Sirmayanti Sirmayanti
Date Deposited: 13 Jun 2023 09:42
Last Modified: 13 Jun 2023 09:42
URI: https://repository.poliupg.ac.id/id/eprint/3428

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