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A Receiver Architecture with Low Complexity for Chirp Spread Spectrum in IEEE 802.15.4a  

Kim, Yeong-Sam (Department of Electronics and Computer Engineering, Hanyang University)
Chong, Jong-Wha (Department of Electronics and Computer Engineering, Hanyang University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.8, 2010 , pp. 24-31 More about this Journal
Abstract
A receiver architecture with low complexity for chirp spread spectrum (CSS) of IEEE 802.15.4a is proposed. To demodulate the received signal at the highest signal to noise power ratio, matched filter is generally adopted for the receiver of wireless communication systems. It is, however, not resonable to adjust the matched filter to the receiver of CSS whose objectives are low complexity, low cost and low power consumption since complexity of the matched filter is high. In this paper, we propose a new receiver architecture using differential multiplication and accumulator not matched filter for demodulation. Also, bi-orthogonal decoder implemented by only adder/subtractor is proposed. The hardware resources for implementation are reduced in the proposed receiver architecture, although bit error rate performance is low compared with the receiver architecture based on the matched filter.
Keywords
Chirp spread spectrum;
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  • Reference
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