多個單旁帶射頻訊號的帶通取樣頻率計算

軟體無線電（Software Define Radio）架構的核心概念在於不使用混波器（mixer）以及將類比/數位轉換器（analog-to-digital converter）盡可能的靠近天線端。如此一來，我們可以將更多通訊系統的功能以軟體實現。帶通取樣是一種有效直接降頻而不需要使用混波器的一種方法。雖然針對單一射頻訊號的帶通取樣定理已經發展成熟，但是在對於兩個或者是多個以上的射頻訊號的帶通取樣理論的發展卻還不夠成熟。在本篇論文中，我們將推導出適用於對多個單旁波帶的射頻訊號的帶通取樣的通式。。這個方法利於程式的設計。如此一來，更符合軟體無線電架構的核心觀念。

關鍵字

帶通取樣

並列摘要

The kernel concept of the software defined radio (SDR) is to annul the mixers and to place analog-to-digital converters as near the antenna as possible [2]. The reason why is that we can implement the most SDR functionality to a programmable micro or signal processor. Bandpass sampling is a helpful method for direct digital downconversion without mixers. Although the bandpass sampling theory for single RF signal is well developed, however, for two or more RF signals is relatively immature. In this thesis, we derived the general equations which are related to the bandpass sampling of multiple single-side-band RF signals. This is good to design the program to compute. That is meeting the center idea behind the software radio architecture.

並列關鍵字

bandpass sampling

參考文獻

[2] Joe Mitola, “The software radio architecture,” IEEE Communications Magazine, vol. 33, no 5, pp. 26-38, May 1995.

[3] Rodney G. Vaughan, Neil L. Scott, and D. Rod White, “The theory of bandpass sampling,” IEEE Transactions on Signal Processing, vol. 39, no. 9. September 1991.

[5] N. Wong and T-S Ng, “An efficient algorithm for downconverting multiple bandpass signals using bandpass sampling,” Proc. IEEE Int. Conf. Commun., Helsinki, Finland, June 2001, vol. 3, pp.910-914.

[6] Ching-Hsiang Tseng and Sun-Chung Chou, “Direct downconversion of multiple RF signals using bandpass sampling, ” IEEE Int. Conf. Commun., pp. 2003-2007, May 2003.

[7] Junghwa Bae, Won Ha and Jinwoo Park, “An algorithm for downconverting signals using complex bandpass sampling in SDR system,” The 14th IEEE 2003 Int. Symposium on Personal, indoor and Mobile Radio Commun. Proceedings, pp. 130-134.

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多個單旁帶射頻訊號的帶通取樣頻率計算

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