ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
권호 표지
DOI QR코드

DOI QR Code

A New Architecture of Matched Filter for Chirp Spread Spectrum in IEEE 802.15.4a

  • Kim, Yeong-Sam (Department of Electronics and Computer Engineering, Hanyang University) ;
  • Jang, Seong-Hyun (Department of Electronics and Computer Engineering, Hanyang University) ;
  • Yoon, Sang-Hun (Convergence Components & Materials Research Laboratory, ETRI) ;
  • Chong, Jong-Wha (Department of Electronics and Computer Engineering, Hanyang University)
  • Received : 2009.10.12
  • Accepted : 2009.12.08
  • Published : 2010.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

We propose a new matched filter architecture for chirp spread spectrum in IEEE 802.15.4a. By using relations among the four subchirps, the proposed architecture comprises four subfilters utilizing only a set of coefficients matched to the first subchirp. The four subfilters share adders and registers, and as a result, the required adders and registers for implementation are reduced.

Keywords

References

  1. $IEEE P802.15.4a^{TM}$/D7, Jan. 2007.
  2. S. Yoon et al., "Differentially Coherent Detection of Differentially Bi-Orthogonal Code," IEEE Commun. Lett., vol. 11, 2007, pp. 796-798. https://doi.org/10.1109/LCOMM.2007.070859
  3. S. Jang et al., "A New Packet Detection Algorithm for IEEE 802.15.4a DBO-CSS in AWGN Channel," Proc. ISCAS, May 2008, pp. 1020-1023.
  4. S. Baik et al., "A New Frequency Offset Estimation Algorithm for DBO-CSS in Multipath Channels," Proc. WTS, Apr. 2008, pp. 102-105.
  5. Chang-Eui Lee et al., Complex Filter Apparatus for Use in an Equalizer, US Patent 490,285, Daewoo Electronics Co., Ltd., Seoul, Rep. of Korea, 1995.
  6. M. Macleod et al., "Multiplierless FIR Filter Design Algorithms," IEEE Signal Process. Lett., vol. 12, no. 3, Mar. 2005, pp. 186-189. https://doi.org/10.1109/LSP.2004.842270
  7. S. Cho et al., "A Low Complexity 128-Point Mixed-Radix FFT Processor for MB-OFDM UWB Systems," ETRI J., vol. 32, no. 1, Feb. 2010, pp. 1-10. https://doi.org/10.4218/etrij.10.0109.0232
  8. A. Dempster et al., "Use of Minimum-Adder Multiplier Blocks in FIR Digital Filters," IEEE Trans. Circuits Syst., vol. 42, no. 9, Sept. 1995, pp. 569-577. https://doi.org/10.1109/82.466647