以PC為基礎的軟體無線電數位電視廣播接收器之軟體基頻最佳化－除了通道解碼外

Software Baseband Optimization Except Channel Decoding for PC-Based DVB-T Software Radio Receiver

張晏毓(Yen-Yu Chang)

指導教授 ： 曾恕銘

國立臺北科技大學/電資學院/電資碩士在職專班研究所/碩士(2012年)

摘要

軟體無線電具有靈活性、低成本與多種模式的優勢，但是主要的缺點為處理速度較慢。為了提升以PC為基礎的軟體無線電數位電視廣播接收器的處理速度，我們必須實作出一些更快的基頻訊號處理的演算法，在這篇論文中，我們探討如何實作出更快的 (1)16-QAM 映射到每個位元、(2)擴展通道係數的數值到腓特比解碼器以及(3)內部解交錯器等功能。這三個功能的處理速度比原先快了6.64倍、0.57倍與0.88倍。

關鍵字

軟體無線電 ； 數位電視廣播 ； SIMD

並列摘要

The software radio has the advantages of flexibility, low cost and multimode ability, but the major disadvantage is the slower speed. To increase the speed of PC-based software DVB-T receiver, we need implement the baseband signal processing algorithms much faster. In this thesis, we discuss faster implementation of (1) 16QAM de-mapper to bits, (2) expanding_channel coefficient value in Viterbi decoder, and (3) inner de-interleaver and depuncturer. The speed of these three blocks is 6.64x, 0.57x and 0.88x faster.

並列關鍵字

Software radio ； DVB-T ； SIMD

參考文獻

[3] S. M. Tseng, Y. T. Hsu, M. C. Chang, and H. L. Chan, "A Notebook PC Based Real-Time Software Radio DAB Receiver," IEICE Transactions on Communications, vol. E89B, No. 12, Dec. 2006, pp. 3208-3214.

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[10] A. Shahbahrami, B. Juurlink, and S. Vassiliadis, “Implementing the 2-D Wavelet Transform on SIMD-Enhanced General-Purpose Processors,” IEEE Transactions on Multimedia, vol. 10, no. 1, pp. 43-51, Jan 2008.

REFERENCES

[2] Shi Li, Chuanrun Zhai, Xingqun Zhan, and Boxiong Wang, “Implement of real-time GPS L1 software receiver,” in Proc. the 4th International Conference on Computer Science & Education (ICCSE '09), 25-28 July 2009, pp. 1132 - 1137.