Zadoff-Chu sequence를 이용한 실시간 Calibration 알고리즘과 FPGA 구현A Novel Calibration Method Using Zadoff-Chu Sequence and Its FPGA Implementation
- Other Titles
- A Novel Calibration Method Using Zadoff-Chu Sequence and Its FPGA Implementation
- Authors
- 장재현; 최승원; 손철봉; 양현욱
- Issue Date
- Sep-2013
- Publisher
- (사)디지털산업정보학회
- Keywords
- Array Antenna; Calibration; Zadoff-Chu Sequence; LTE System
- Citation
- (사)디지털산업정보학회 논문지, v.9, no.3, pp.59 - 65
- Indexed
- KCI
OTHER
- Journal Title
- (사)디지털산업정보학회 논문지
- Volume
- 9
- Number
- 3
- Start Page
- 59
- End Page
- 65
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/161978
- ISSN
- 1738-6667
- Abstract
- This paper presents a novel calibration method for a base station system adopting an antenna array. The proposed technique utilizes Zadoff-Chu sequence, which is included in the LTE pilot signal periodically, in order to compute the phase characteristic of each antenna channel. As the Zadoff-Chu sequence exhibits an excellent autocorrelation characteristic, it is possible for the receiving base station to retrieve the Zadoff-Chu sequence transmitted from each mobile terminal. In addition, we can obtain the phase characteristic of each antenna channel, which is the ultimate goal of the calibration procedure.
The proposed calibration algorithm has been implemented using an FPGA (Field Programmable Gate Array). We have applied the proposed algorithm to an array consisting of 2 antenna elements for simplicity. the phase value implied to the first and second antenna path is very accurately calculated from the proposed procedure. From the experimental test, the proposed method provides accurate calibration results.
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