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Pilot-based Sequence Design to Overcome a Blockage in mmWave Cellular Systems
- Authors
- Kim, Yeong Jun; Sultan, Qasim; Cho, Yong Soo
- Issue Date
- Oct-2020
- Publisher
- IEEE
- Keywords
- Blockage; cellular system; mmWave; pilot sequence design; relay
- Citation
- 11TH INTERNATIONAL CONFERENCE ON ICT CONVERGENCE: DATA, NETWORK, AND AI IN THE AGE OF UNTACT (ICTC 2020), v.2020-October, pp 42 - 44
- Pages
- 3
- Journal Title
- 11TH INTERNATIONAL CONFERENCE ON ICT CONVERGENCE: DATA, NETWORK, AND AI IN THE AGE OF UNTACT (ICTC 2020)
- Volume
- 2020-October
- Start Page
- 42
- End Page
- 44
- ISSN
- 2162-1233
- Abstract
- The deployment of relay stations (RS) has been regarded as a possible solution to the blocking problem in millimeter wave (mmWave) communication systems. In this paper, we discuss issues to be considered in relay-assisted mmWave cellular systems based on orthogonal frequency division multiplexing. We describe a pilot-based training method to achieve effective RS selection during blockage. We propose two different types of pilot sequences, which allow mobile stations to distinguish pilot sources in a multi-cell multi-relay environment: pilot signals based on Zadoff-Chu sequence (PS1) and m-sequence (PS2). Correlation properties of PS1 and PS2 are derived and compared with that of the conventional sequence (Gold sequence). A blocking model is used to verify the properties, constraints, advantages, and disadvantages of the proposed pilot sequences in the RS-assisted mmWave cellular system.
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