Strobe Pulse Design for Quadrature Multiplexed Binary Offset Carrier Modulation in BeiDou B1C Signal

Wengang LI; Chen HUANG; Yiwei WANG

doi:10.11999/JEIT180109

Volume 40 Issue 10

Sep. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(10): 2438-2446

Wengang LI, Chen HUANG, Yiwei WANG. Strobe Pulse Design for Quadrature Multiplexed Binary Offset Carrier Modulation in BeiDou B1C Signal[J]. Journal of Electronics & Information Technology, 2018, 40(10): 2438-2446. doi: 10.11999/JEIT180109

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Wengang LI, Chen HUANG, Yiwei WANG. Strobe Pulse Design for Quadrature Multiplexed Binary Offset Carrier Modulation in BeiDou B1C Signal[J]. Journal of Electronics & Information Technology, 2018, 40(10): 2438-2446. doi: 10.11999/JEIT180109

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Strobe Pulse Design for Quadrature Multiplexed Binary Offset Carrier Modulation in BeiDou B1C Signal

doi: 10.11999/JEIT180109

State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (61201136), The Plan of Introducing Talents for Discipline Innovation in Universities (B08038)

Received Date: 2018-01-25
Rev Recd Date: 2018-06-28

Available Online: 2018-07-18

Publish Date: 2018-10-01

Abstract

Abstract

The third generation of BeiDou satellite navigation system employs Quadrature Multiplexed Binary Offset Carrier (QMBOC) modulation for B1C signal. In order to improve the anti-multipath performance of code tracking loops and solve the problem of code tracking ambiguity for BeiDou system, a double strobe code tracking loop structure for QMBOC(6, 1, 4/33) modulation is proposed. According to the ideal phase discrimination function and the auto-correlation function of BOC signal, two kinds of strobe pulse are designed for BOC(1, 1) and BOC(6, 1) respectively. Then, these two strobe pulse waveforms are used to correlated with the input signal in the code tracking loop. Finally, these two correlation functions are weighed combined for phase discrimination. The computer simulation results show that the proposed method can not only eliminate the code tracking ambiguity for QMBOC(6, 1, 4/33), but also improve the anti-multipath performance dramatically: the multipath error envelope area is reduced by about 33% compared with the existed method.
- The third generation of BeiDou system,
- Quadrature Multiplexed Binary Offset Carrier (QMBOC),
- Anti-multipath,
- Tracking ambiguity,
- Strobe pulse

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References(20)

References

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