The low-area of new arc-tangent look-up table and a low overhead for CATV modem systems

Author

Ban, Young-Hoon ; Cho, Byung-Lok ; Song, Jai-Chul

Author_Institution

Dept. of Electron. Eng., Sunchon Univ., Chonnam, South Korea

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

33

Lastpage

36

Abstract

Makes possible a removal of the preamble for carrier recovery and symbol-timing recovery by storing a burst in memory with low overhead quaternary phase shift keying (QPSK) demodulation method which also effects frame efficiency improved by processed synchronization performance. In this paper, we propose the new algorithm for arc-tangent look-up table which transforms the input I, Q data by phase. This I, Q data plays an important role in demodulation and realises a demodulator with low-overhead by storing a burst in memory

Keywords

cable television; demodulation; modems; quadrature phase shift keying; synchronisation; table lookup; timing; CATV modem systems; I, Q data; arc-tangent look-up table; carrier recovery; demodulation method; frame efficiency; overhead; processed synchronization performance; quaternary phase shift keying; symbol-timing recovery; Demodulation; Equations; Filters; Frequency estimation; Frequency synchronization; Modems; Phase estimation; Sampling methods; Table lookup; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on

Conference_Location

Seoul

Print_ISBN

0-7803-5705-1

Type

conf

DOI

10.1109/APASIC.1999.824022

Filename

824022