5G New Radio is expected to employ multiple nu-merologies where diverse subcarrier spacings coexist to satisfy the requirements and channel characteristics of users. Since conventional autocorrelation-based time synchronization methods are designed for orthogonal frequency division multiplexing (OFDM) systems with a single numerology, they cannot be applied in OFDM-based multiple numerologies. We propose a new preamble structure for use in OFDM system with multiple numerologies. The proposed preamble is generated by overlapping multiple preamble components which have a repetitive structure and an amplified cyclic prefix. With these features, a different time metric corresponding to each numerology can be independently obtained from the proposed preamble. Then, each user can perform time synchronization process with the system parameter corresponding to their numerology, regardless of other user's numerology.
|Title of host publication||2018 IEEE 88th Vehicular Technology Conference, VTC-Fall 2018 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 2018 Jul 2|
|Event||88th IEEE Vehicular Technology Conference, VTC-Fall 2018 - Chicago, United States|
Duration: 2018 Aug 27 → 2018 Aug 30
|Name||IEEE Vehicular Technology Conference|
|Conference||88th IEEE Vehicular Technology Conference, VTC-Fall 2018|
|Period||18/8/27 → 18/8/30|
Bibliographical noteFunding Information:
This work was supported in part by the National Research Foundation of Korea(NRF) grant funded by the Korea government (No. 2018R1A2A1A05021029) and in part by Institute for Information & communications Technology Promotion(IITP) grant funded by the Korea government(MSIP) (No. 2016-0-00181, Development on the core technologies of transmission, modulation and coding with low-power and low-complexity for massive connectivity in the IoT environment)
© 2018 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics