應用於無線通訊之低功耗基頻處理器

Abstract

基頻訊號處理在無線通訊系統上扮演關鍵性的角色，不僅可有效提升傳輸的效 能，更能提供多模式和多標準的系統實現方案。然而要達成低成本和低功耗設計方法， 不僅對於個別模組的演算法需深入瞭解外，也必須融入系統層級的行為，方能提供一具 有技術競爭力的解決方案。因此在這三年的研究計畫，我們將針對OFDM主流無線通訊系 統所需求的關鍵模組（如FFT/IFFT、VD、TC、LDPC、等）進行相關議題的研究，除了將 個別模組的運算能力提升到1GS（十億訊號）以上的Throughput（吞吐量）外，同時探 討相關低功耗和低成本的設計方法，尤其如何在不同設計規範下達成多模和多標準的作 業模式，最後將此關鍵模組設計整合，並配合基頻訊號的同步模組電路，完成一符合多 模、多標準的低功耗基頻處理器。

Abstract: Signal processing in baseband processor designs plays a key role in wireless communication system designs—in not only improving overall system transmission performance, but also providing the capability of multi-mode and multi-standard for cost-effective system realization. To reach better performance indices in terms of low-cost and low-power, it is necessary to investigate system design methodologies, covering in-depth exploration of algorithms of key modules and exploitation of unique features/behaviors of a complete system. As a result, a more competitive solution can be delivered. In this 3-year (2008/8~2011/7) research proposal, we’ll concentrate on the key modules (FFT/IFFT, VD, TC, LDPC…etc) of the main-stream OFDM wireless communication systems. The first issue is to explore solutions for these core modules so that their throughput can be over 1GS. The second issue is the low-cost solution when different standards are taken into account. The third issue is the low-power solution for portable devices. In the end, these design techniques and key modules will be integrated on a design platform, together with synchronization modules, to come up with a multi-mode, multi-standard, and low-power baseband processor.