A low-power multicarrier-CDMA downlink baseband receiver for future cellular communication systems

作者：Tsai Pei Yun^*; Chiueh Tzi Dar

来源：IEEE Transactions on Circuits and Systems I-Regular Papers, 2007, 54(10): 2229-2239.

DOI：10.1109/TCSI.2007.904593

• baseband receiver
• code-division multiple access (CDMA)
• multi-carrier modulation

In this paper, design and implementation of a base-band 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 base-band receiver integrated circuit demonstrate its superior system performance and great reduction in power consumption. The chip Was fabricated in a 0.18-mu m CMOS technology with a core area of 2.6 mm x 2.6 mm. It can support up to 21.7-Mbps uncoiled 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.

• 出版日期2007-10
• 单位中央民族大学; 中国科学院电工研究所