期刊
IEICE TRANSACTIONS ON COMMUNICATIONS
卷 E104B, 期 5, 页码 563-569出版社
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
DOI: 10.1587/transcom.2020EBP3121
关键词
GNSS; signal structure; offset carrier modulation; navigation signal design
资金
- National Key Research and Development Program [2019YFB1600605]
- National Natural Science Foundation of China [52071199]
- Shanghai Pujiang program [18PJD017]
- Shanghai Natural Science Foundation [18ZR1417100, 19ZR1422800]
This paper introduces a new GNSS signal design called Quinary Offset Carrier modulation (QOC) which offers different pulse waveform options through selecting different modulation parameters. The spectra and autocorrelation characteristics of QOC modulations are investigated, showing similar performance to traditional BOC modulation. QOC modulation provides a new option for satellite navigation signal design.
In order to improve tracking, interference and multipath mitigation performance from that possible with existing signals, a new Global Navigation Satellite System (GNSS) signal is needed that can offer additional degrees of freedom for shaping its pulse waveform and spectrum. In this paper, a new modulation scheme called Quinary Offset Carrier modulation (QOC) is proposed as a new GNSS signal design. The pulse waveforms of QOC modulation are divided into two types: convex and concave waveforms. QOC modulations can be easily constructed by selecting different modulation parameters. The spectra and autocorrelation characteristics of QOC modulations are investigated and discussed. Simulations and analyses show that QOC modulation can achieve similar performance to traditional BOC modulation in terms of code tracking, anti-multipath, and compatibility. QOC modulation can provide a new option for satellite navigation signal design.
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