Earticle

초록

영어

During the random access process of LTE system, PRACH needs to perform significant amount of computations (e.g. IFFT, FFT) on received signals. Therefore conducting downsampling on received signals is necessary to decrease the complexity of the subsequent signal processing work. Downsampling usually employs a multi-stage filter which consists of a CIC filter, a compensation filter and a half-band filter. This paper introduced a new donwsampling method using a multi-stage half-band filter with three half-band decimation filters. Compared with the traditional one, the new method showed a great increase in computing efficiency. The new filter was designed and a plan of implementing this filter on FPGA was suggested. MATLAB simulation was performed and the simulating results showed that the method proposed in this paper is capable of conducting downsampling on received signals, especially in the random access channel.

목차

Abstract
 1. Introduction
 2. Determination of LTE System Downsampling Plan
 3. Design of PRACH Downsampling Module
  3.1. Filter Design
  3.2. Design of PRACH Half-band Filter
 4. PRACH Downsampling Module on FPGA
 5. Conclusion
 Acknowledgements
 References

키워드

저자

• Li-hua Wu [ The higher educational key laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China ]
• Xiu-li Zhang [ The higher educational key laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China ]
• Yang Yang [ The higher educational key laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605