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학술대회 Random Access Channel Design for New Radio
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조권도, 이영하
International Conference on Ubiquitous and Future Networks (ICUFN) 2019, pp.674-676
19HH1900, 셀룰러 기반 산업 자동화 시스템 구축을 위한 5G 성능 한계 극복 저지연, 고신뢰, 초연결 통합 핵심기술 개발, 김태중
This paper presents considerations for designing physical random access channel in 5G new radio standard defined in 3GPP. We carried out fixed point link level simulation to see the practical performance in designing modem chip for UE and gNB. In the fixed point simulation, we assumed the sampling rate of 61.44 Msps, 30 kHz subcarrier spacing, 3.7 GHz center frequency, and 40 MHz system bandwidth. To reduce the complexity in the receiver, we employed the alpha max plus beta min algorithm, which is a highspeed approximation of the square root of the sum of two squares. We refers to the performance requirements described in 3GPP TS38.104, which describes the official performance requirements for physical random access channel for new radio. Simulation results indicates that the performance of the designed PRACH module suffices the requirements defined in release 15 at least in additive white Gaussian noise and fading channel with 400 Hz frequency offset.
KSP 제안 키워드
400 Hz, Additive white Gaussian noise(AWGN), Center frequency, Channel design, Fixed-point, Link level simulation, Physical random access channel(PRACH), Random access channel(RACH), Sampling rate, Square root, Subcarrier spacing