Link Scheduling Method Based on CAZAC Sequence for Device-to-Device Communication 


Vol. 38,  No. 4, pp. 325-336, Apr.  2013


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  Abstract

FlashLinQ, one of the typical D2D communication systems developed by Qualcomm, considers a single-tone communication based distributed channel-aware link scheduling method to realize the link scheduling process with low control overheads. However, considering the frequency selective fading effect of practical multi-path channel, the single-tone based SIR estimation causes a critical scheduling error problem because the received single-tone signal has quite different channel gain at each sub-carrier location. In order to overcome this problem, we propose a novel link scheduling method based on CAZAC (Constant Amplitude Zero Auto-Correlation) sequence for D2D communication system. In the proposed method, each link has a unique offset value set for the generation of CAZAC sequences. CAZAC sequences with the cyclic offsets are transmitted using multiple sub-blocks in the entire bandwidth, and then each device can obtain nearly full-band SIR using a good cyclic cross-correlation property of CAZAC sequence.

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  Cite this article

[IEEE Style]

W. Kang, W. Hwang, H. Choi, "Link Scheduling Method Based on CAZAC Sequence for Device-to-Device Communication," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 4, pp. 325-336, 2013. DOI: .

[ACM Style]

Wipil Kang, Won-Jun Hwang, and Hyung-Jin Choi. 2013. Link Scheduling Method Based on CAZAC Sequence for Device-to-Device Communication. The Journal of Korean Institute of Communications and Information Sciences, 38, 4, (2013), 325-336. DOI: .

[KICS Style]

Wipil Kang, Won-Jun Hwang, Hyung-Jin Choi, "Link Scheduling Method Based on CAZAC Sequence for Device-to-Device Communication," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 4, pp. 325-336, 4. 2013.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880