Channel estimation algorithm for orthogonal space-time coded continuous phase modulation systems

被引：0

作者：

Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China ^{[1
]}

机构：

[1] Department of Information Science and Electronic Engineering, Zhejiang University

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2008年 / 42卷 / 11期

关键词：

Orthogonal space-time coded continuous phase modulation (OSTC-CPM); Quasi-static fading channel; Variance of estimation; Waveform orthogonality;

D O I：

10.3785/j.issn.1008-973X.2008.11.004

中图分类号：

学科分类号：

摘要：

A data-aided channel estimation algorithm was proposed for a burst-mode orthogonal space-time coded continuous phase modulation (OSTC-CPM) system over quasi-static Rayleigh fading channels. This algorithm mainly uses the waveform orthogonality of space-time coded modulation systems with two transmit antennas and multiple receive antennas. Each receive antenna multiplies the received signal by the known training sequence which corresponding to one of the two transmit antennas; then the product is delayed for one symbol interval, and added together with the current signal; finally, the fading coefficient of the corresponding channel can be obtained by dividing the energy of the training sequence. Analytical variance of the estimation declines linearly by increasing the bit signal-to-noise ratio for the proposed channel estimator. The effects of training sequence length, over-sampling ratio, and different pulse shaping filters were investigated. Simulation results matched the theoretical analysis. Compared with the known channel, the difference of bit error rate (BER) was less than 0.2 dB. Therefore, this algorithm is appropriate for OSTC-CPM systems over quasi static Rayleigh fading channels.

引用

页码：1868 / 1872

页数：4

共 6 条

[1] Zhang X., Fitz M.P., Space time code design with continuous phase modulation, IEEE Journal on Selected Areas in Communication, 21, 5, pp. 783-792, (2003)
[2] Wang G., Xia X., An orthogonal space-time coded CPM system with fast decoding for two transmit antennas, IEEE Transactions on Information Theory, 50, 3, pp. 486-493, (2004)
[3] Naguib A.F., Tarokh V., Seshadri N., Et al., A space-time coding modem for high-data-rate wireless communications, IEEE Journal on Selected Areas in Communication, 16, 8, pp. 1459-1478, (1998)
[4] Anderson J.B., Aulin T., Sunderbug C.E., Digital Phase Modulation, (1986)
[5] Alamouti S.M., A simple transmit diversity technique for wireless communications, IEEE Journal on Selected Areas in Communication, 16, 8, pp. 1451-1458, (1998)
[6] Wang D., Wang G., Xia X., An orthogonal space-time coded partial response CPM system with fast decoding for two transmit antennas, IEEE Transactions on Wireless Communications, 4, 5, pp. 2410-2422, (2005)

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