架構在空時編碼通訊系統下之有限長度的決定迴授等化器設計

Decision feedback equalization (DFE) is a well-established intersymbol interference mitigating technique for linear, noise, and dispersive channels. In this thesis, we discuss the finite length decision feedback equalization and present a new solution for the receiver based on the signal-to-interference and noise ratio (SINR) criterion. We also extend the DFE receiver concepts to space-time block-coded transmission over frequency-selective multi-input multi-output (MIMO) channels. The focus lies on Alamouti's space-time block code with two transmit and only one receive antenna. Combined equalization and decoding scheme is presented under the constraint of linear processing complexity (no trellis search) at the receiver. Simulation is made over several channels including typical EDGE channels, and significant gains can be observed compared with a single-input single-output DFE scheme.

並列關鍵字

decision feedback equalization ； space-time block code ； communication systems

參考文獻

[1] N. Al-Dhahir and J. M. Cioffi, “MMSE decision feedback equalizers: Finite-length results,” IEEE Trans. Inform. Theory, vol. 41, pp. 961-976, July 1995.

[2] S. M. Alamouti, “A simple transmit diversity technique for wireless communications, ” IEEE Trans. Commun., vol. 16, pp. 1451-1458, Oct. 1998.

[3] V. Tarokh, N. Seshadri, and A. R. Calderbank, “Space-time codes for high-data-rate wireless communication: Performance criterion and code construction, ” IEEE Trans. Inform. Theory, vol. 44, pp. 744-765, Mar. 1998.

[4] G. Bauch and A. F. Naguib, “MAP equalization of space-time coded signals over frequency-selective channels, ” in Proc. IEEE Wireless Communications and Networking Conf., 1999, pp. 261-265.

[5] W.-J. Choi and J. M. Cioffi, “Multiple input/multiple output (MIMO) equalization for space-time block coding, ” in Proc. Pacific Rim Conf. Communications, Computers, Signal Processing, 1999, pp. 341-344.

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架構在空時編碼通訊系統下之有限長度的決定迴授等化器設計

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