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	Novel DDS-Based Method to Realize OFDM Baseband Signals
	Liu, San-jun ; Ma, Meng ; Zhao, Zi-jun ; Liu, Chang ; Jiao, Bing-li
	2016
关键词	OFDM Transmitter DDS IFFT TRANSFORM
英文摘要	In this paper, we propose a novel Orthogonal Frequency Division Multiplexing (OFDM) baseband signal generator to substitute the traditional Inverse Fast Fourier Transform (IFFT) based structure in an OFDM transmitter. In our architecture, we employ the Direct Digital Synthesizer (DDS) method to generate digital sub-carriers and transform frequency domain data to time domain. By making full use of the OFDM signal's two distinctive properties, we simplified the proposed architecture to the extent that multipliers can be discarded, and the DDS modules can share a small number of read-only memory (ROM) banks. Moreover, the proposed architecture has no latency while outputting the first time domain data, which leads to a quicker response compared to conventional structure. Finally, we conduct experiments on Field Programmable Gate Array (FPGA) which demonstrates that our DDS-based architecture saves more than half of the hardware resources and doubles the achievable frequency compared with traditional structure.; EI; CPCI-S(ISTP); lsjbox@pku.edu.cn; mam@pku.edu.cn; zhaozijun@pku.edu.cn; liuchang0812@pku.edu.cn; jiaobl@pku.edu.cn; 279-288; 382
语种	英语
出处	5th International Conference on Electronics, Communications and Networks (CECNet)
DOI标识	10.1007/978-981-10-0740-8_32
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449507]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liu, San-jun,Ma, Meng,Zhao, Zi-jun,et al. Novel DDS-Based Method to Realize OFDM Baseband Signals. 2016-01-01.

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