Performance Improvement of a STTD Receiver without the Mutual Interference of Antenna

Woo, Byung-Hoon; Baek, Seung-Sun; Kang, Heau-Jo

Journal of the Korean Institute of Electromagnetic and Science 2003;3(2):99-103.

Byung-Hoon Woo¹, Seung-Sun Baek¹, Heau-Jo Kang²

¹Dept. of Information & Communication Eng., Jeonju technical College
²Dept. of IT Eng., Mokwon Univ.

Abstract

For mobile multimedia systems that equip transmit diversity for a forward channel, it is well known that the Tx diversity technique is appropriate for high rate mobile multimedia communications. In this paper, we propose a STTD (Space Time Transmit Diversity) receiver, which incorporates the design of the Tx diversity receiver without the mutual interference of antenna by using a CCI cancellation technique. The new STTD receiver is simulated and its performance is analyzed in a DS-CDMA/QPSK. Adopting the proposed STTD receiver at $10^{-2}$TEX>∼$10^{-4}$TEX> in bit error rate, SNR of 0.5 ㏈∼2 ㏈ performance improvement in AWGN and Rayleigh fading environments has been achieved.

Key words: STTD(Space Time Transmit Diversity), CCI Canceller, IMT-2000, MAI(Multi-Access Interference)