Abstract: In this paper, we present the result of our researches on the wideband code division multiple access (W-CDMA) multimedia wireless access techniques. This includes to propose W-CDMA modulation scheme of variable transmission rate, partial-balance power control algorithm, and wireless access method of variable access rate. Based on the proposed W-CDMA multimedia wireless multiple access techniques, an experimental system which consists of a base station and multimedia terminals is also developed. The system realizes the wireless communication of voice with 8kbps transmission rate and data with 144kbps transmission rate.

Key words: W-CDMA, multiple access techniques, system implementation