Title :
A single-chip universal burst receiver for cable modem/digital cable-TV applications
Author :
Lu, Fang ; Min, Jonathan ; Liu, Sam ; Cameron, Kelly ; Jones, Christopher ; Lee, Owen ; Li, Johnson ; Buchwald, Aaron ; Jantzi, Stephen ; Ward, Christopher ; Choi, Kenneth ; Searle, James ; Samueli, Henry
Author_Institution :
Broadcom Corp., Irvine, CA, USA
Abstract :
This paper presents a single-chip cable upstream receiver which demodulates QPSK/16-QAM burst data in a frequency-agile, time-division multiple access (TDMA) scheme. An analog front end (AFE), an all-digital receiver and an FEC decoder are integrated on chip. The AFE performs coarse gain setting and signal quantization on either an IF input or baseband I/Q inputs. The digital QAM receiver contains a quadrature down-mixer, multi-stage decimators, Nyquist filters, carrier/timing acquisition loops, and an adaptive equalizer. The FEC decoder consists of a programmable descrambler and a versatile Reed-Solomon decoder. The chip occupies 4.7×7.8 mm2 die area in a 0.35-μm CMOS process, and consumes 1.0 W at 3.3 V in a 100-pin PQFP
Keywords :
CMOS integrated circuits; Reed-Solomon codes; adaptive equalisers; cable television; decoding; demodulation; digital television; forward error correction; frequency agility; mixed analogue-digital integrated circuits; modems; quadrature amplitude modulation; quadrature phase shift keying; quantisation (signal); receivers; time division multiple access; 0.35 micron; 1 W; 3.3 V; ASIC; CMOS process; FEC decoder; IF input; Nyquist filters; PQFP; QPSK/16-QAM burst data; Reed-Solomon decoder; adaptive equalizer; all-digital receiver; analog front end; baseband I/Q inputs; cable modem applications; cable upstream receiver; carrier/timing acquisition loops; coarse gain setting; demodulation; digital QAM receiver; digital cable-TV applications; frequency-agile TDMA scheme; multi-stage decimators; programmable descrambler; quadrature down-mixer; signal quantization; single-chip universal burst receiver; time-division multiple access scheme; Baseband; Communication cables; Decoding; Frequency; Modems; Performance gain; Quadrature amplitude modulation; Quadrature phase shift keying; Quantization; Time division multiple access;
Conference_Titel :
Custom Integrated Circuits Conference, 2000. CICC. Proceedings of the IEEE 2000
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5809-0
DOI :
10.1109/CICC.2000.852674
