Performance analysis of turbo decoder on the W-CDMA uplink layer

Xin Fang; Xiqi Gao; XiaoHu You

doi:10.1117/12.445253

18 October 2001 Performance analysis of turbo decoder on the W-CDMA uplink layer

Xin Fang, Xiqi Gao, XiaoHu You

Proceedings Volume 4586, Wireless and Mobile Communications; (2001) https://doi.org/10.1117/12.445253
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

Abstract

Turbo code is widely noticed as a code that can achieve the performance close to Shannon's limit. Turbo code (k=3) and Convolutional code (k=9) are adopted for channel coding units of WCDMA standard. The Turbo code is expected for the system of high rate data transmission in view of performance and hardware complexity. In this paper, the simulation platform of W-CDMA uplink is developed by the EDA tool-COSSAP. Channel model is M.1225 with 6 fingers model estimated by channel estimator on the Base Station using discontinuous pilot channel with different pilot modes. The BER simulation performance of turbo decoder based on Log-MAP algorithm under frequency selective fading channel is presented in comparison with conventional Viterbi decoder. The simulation results show that in the case of enough accurate estimation of channel parameters, Turbo decoder has better BER performance at high E_b/N₀ than conventional Viterbi decoder.

Citation Download Citation

Xin Fang, Xiqi Gao, and XiaoHu You "Performance analysis of turbo decoder on the W-CDMA uplink layer", Proc. SPIE 4586, Wireless and Mobile Communications, (18 October 2001); https://doi.org/10.1117/12.445253

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