A Low-Power Multicarrier-CDMA Downlink Baseband Receiver for Future Cellular Communication Systems
Journal
IEEE Transactions on Circuits and Systems I
Journal Volume
54
Journal Issue
10
Pages
2229-2239
Date Issued
2007-10
Author(s)
Abstract
In this paper, design and implementation of a baseband receiver integrated circuit (IC) for a downlink multi-carrier code-division multiple access (MC-CDMA) system are presented. This MC-CDMA system aims to provide higher data transmission capacity than the current wide-band CDMA systems in mobile cellular communication environments. The proposed chip provides a robust tracking mechanism for synchronization errors and an accurate channel estimation strategy to overcome the challenge of outdoor fast-fading channels. Besides, low-power and low- complexity architecture design techniques are adopted to satisfy mobile receiver needs. Experimental results of the designed baseband receiver integrated circuit demonstrate its superior system performance and great reduction in power consumption. The chip was fabricated in a 0.18-μm CMOS technology with a core area of 2.6 mm × 2.6 mm. It can support up to 21.7-Mbps uncoded data rate in a 5-MHz bandwidth. When running at 5.76 MHz, its power consumption is as low as 9.9 mW from a supply voltage of 1.1 V. © 2007 IEEE.
Subjects
Baseband receiver; Code-division multiple access (CDMA); Multi-carrier modulation
SDGs
Other Subjects
Cellular radio systems; Channel estimation; CMOS integrated circuits; Code division multiple access; Electric power utilization; Fading channels; Multicarrier modulation; Telecommunication links; Baseband receiver; Downlink; Multi-carrier CDMA; Signal receivers
Type
journal article