A Multiplierless DC-Blocker for Single-Bit Sigma-Delta Modulated Signals

Autor: O'Shea Peter, Sadik Amin Z, Hussain Zahir M
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Zdroj: EURASIP Journal on Advances in Signal Processing, Vol 2007, Iss 1, p 018361 (2007)
Druh dokumentu: article
ISSN: 1687-6172
1687-6180
Popis: The DC content in single-bit domain is both undesirable and hard to remove. In this paper we propose a single-bit multiplierless DC-blocker structure. The input is assumed to be sigma-delta modulated bitstream. This DC-blocker is designed using a delta modulator topology with a sigma-delta modulator (SDM) embedded in its feedback path. Its performance is investigated in terms of the overall signal-to-noise ratio, the effectiveness of DC removal, and the stability. The proposed structure is efficient for hardware realisation.
Databáze: Directory of Open Access Journals
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