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Study of word length selection for DDCs used in ultra-low symbol rate receivers
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作者 朱亚平 崔诵祺 《Journal of Beijing Institute of Technology》 EI CAS 2014年第2期260-264,共5页
The relationship between the hardware requirement of digital down converters(DDCs)in ultra-low symbol rate receivers and the word length is studied.Through analyzing the impact of word length selection to the system... The relationship between the hardware requirement of digital down converters(DDCs)in ultra-low symbol rate receivers and the word length is studied.Through analyzing the impact of word length selection to the system performance,a modified scheme is presented to decline the resource consumption without too much degradation on the signal to noise ratio(SNR).Theoretical analysis and numerical results demonstrate that compared to the traditional design,the proposed scheme could save dozens of memory resources.The scheme also includes some selectable parameters to achieve desired performance in various circumstances.Different from previous work in DDCs that concentrates mostly on the structure design,this paper considers special applications such as ultra-low symbol rate receivers. 展开更多
关键词 digital down converter(DDC) word length ultra-low symbol rate hardware resources
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