计算机工程Issue(10)：281-286,291,7.DOI:10.3969/j.issn.1000-3428.2014.10.052
视觉假体高阶调制解调系统VLSI优化设计
VLSI Optimization Design of Visual Prosthesis High-order Modulation and Demodulation System
摘要
Abstract
Considering the contradiction between the efficiency of wireless power transmission and rate of data transmission on the choice of carrier for visual prosthesis, this paper presents 16DAPSK high-order modulation and demodulation technology for visual prosthesis application. Application advantage for 16DAPSK is analysed combined with the algorithm,then Very Large Scale Integration(VLSI) for 16DAPSK is designed and optimized by reducing circuit scales of filters with symmetrical characteristics of coefficients and RAG method. The hardware is verified on the DE4 platform as well as the efficiency of wireless power transmission and rate of data transmission. Experimental results show that the system works correctly,16DAPSK technology can solve the problem of channel delay and improve performance for visual prostheses with the simplified demodulation hardware structure. By optimizing,hardware resources are reduced by 58% ,which increases the feasibility of clinical application for visual prosthesis. Compared with traditional methods, energy efficiency experiment shows that the lower communication frequency for 16 DAPSK settles the aforementioned contradiction.关键词
16DAPSK技术/视觉假体/超大规模集成电路/光幻视/能量效率Key words
16 DAPSK technology/visual prosthesis/Very Large Scale Integration ( VLSI )/phosphene/energy efficiency分类
信息技术与安全科学引用本文复制引用
杨媛,彭凯,吕磊,高勇..视觉假体高阶调制解调系统VLSI优化设计[J].计算机工程,2014,(10):281-286,291,7.基金项目
国家自然科学基金资助项目(61102017) （61102017）
陕西省教育厅专项科研计划基金资助项目(12JK0499)。 （12JK0499）
