Title :
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
fDate :
6/21/1905 12:00:00 AM
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;
Conference_Titel :
ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-5705-1
DOI :
10.1109/APASIC.1999.824022
