PSEUDO-NOISE CODE ACQUISITION IP FOR DS-SS CDMA SYSTEMS

• Main Authors: Kuo-Hua Pu, 普國華
• Other Authors: Yuan-Sun Chu
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/19236504861901505231

碩士 === 國立中正大學 === 電機工程研究所 === 92 === Gradually emergent of 3G mobile communication system and wireless LAN constructive developed, the future of having a combination of 3G mobile systems and wireless LAN into an user equipment is expected. There are two major standards (WCDMA, CDMA 2000) in 3G. In Taiwan, Japan and Korea, these two kinds of license has opened to use concurrently. Recently, wireless LAN is becoming more and more common. Since 3G and IEEE 802.11 are based on the same CDMA technology, thus there is common part in the designing of code synchronization hardware. Primarily, our design is to achieve the code synchro-nization between user equipment and base station or wireless LAN access point, such that, these systems can work on synchronization. Despite the fact that the length of the pseudo-noise code in 3G is too long, so a unique hardware, is needed to instead of a sole processor, to fulfill the requirements. Accordingly, our design wants to work on WCDMA/CDMA 2000, and IEEE 802.11 user equipment. Their activities between access point and base station are manipulated by the code synchronization hardware. Then we joint two kinds of low power technology into the design, that the first low power technology in WCDMA synchronization, power consumption can be reduce from 8% to 11 %, in CDMA 2000 synchro-nization power consumption reduce from 14% to 16 %, but in IEEE 802.11b synchronization power consumption is increase from 2.1% to 2.4 %.The second low power technology in WCDMA synchronization power consumption can be reduce from 32% to 35 %, in CDMA 2000 synchronization power consumption reduce from 3.6% to 8 %, in IEEE 802.11b synchronization power consumption reduce from 38% to 45 %.This Pseudo-Noise Code Acquisition IP operating voltage 1.8v、TSMC 0.18um Mixed Signal (1P6M)、Core area 1655.71*1655.71μm2 .