Han, S.K.
(Chungnam National University, Republic of Korea)
,
Kim, J.-B.
(Navcours Co., Ltd., Republic of Korea)
,
Kim, J.-K.
(DANAM Systems Co., Ltd., Republic of Korea)
,
Han, A.
(Chungnam National University, Republic of Korea)
,
Kim, K.-J.
(Division 3, Agency for Defense Development, Republic of Korea)
,
Song, K.-W.
(Division 3, Agency for Defense Development, Republic of Korea)
,
Lee, S.-J.
(Chungnam National University, Republic of Korea)
,
Ahn, J.M.
To resolve frequency ambiguity of tiered polyphase code (TPC), a differential encoding method to the secondary code of the TPC is proposed. By performing differential decoding, the frequency ambiguity is removed and the code sequence boundary is correctly found. In addition, the correlation results ...
To resolve frequency ambiguity of tiered polyphase code (TPC), a differential encoding method to the secondary code of the TPC is proposed. By performing differential decoding, the frequency ambiguity is removed and the code sequence boundary is correctly found. In addition, the correlation results at the receiver can be used as a frequency offset estimator. Analysis on the receiver operations and the simulation results show that the proposed tiered differential-PC makes the code sequence boundary detection correctly under the frequency offset of up to several hundred hertz. The root mean squared error of the frequency offset estimation is reduced to < 10 Hz under operating signal-to-noise power ratio which is about -35 dB.
To resolve frequency ambiguity of tiered polyphase code (TPC), a differential encoding method to the secondary code of the TPC is proposed. By performing differential decoding, the frequency ambiguity is removed and the code sequence boundary is correctly found. In addition, the correlation results at the receiver can be used as a frequency offset estimator. Analysis on the receiver operations and the simulation results show that the proposed tiered differential-PC makes the code sequence boundary detection correctly under the frequency offset of up to several hundred hertz. The root mean squared error of the frequency offset estimation is reduced to < 10 Hz under operating signal-to-noise power ratio which is about -35 dB.
참고문헌 (3)
Kim, Jeong-been, Lee, Jewon, Park, Daesoon, Kim, Kap-jin, Song, Ki-won, Lee, Sang-Jeong, Ahn, Jae.
Cross-correlation interference-free tiered polyphase codes for GNSS signal design.
Electronics letters,
vol.50,
no.3,
218-219.
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