Multiple Access Interference Suppression for TWSTFT Applications

作者：Huang Yi Jiun^*; Tsao Hen Wai; Lin Huang Tien; Liao Chia Shu

来源：IEEE Transactions on Instrumentation and Measurement, 2017, 66(6): 1337-1342.

DOI：10.1109/TIM.2016.2624900

• Calibration
• code division multiple access (CDMA)
• satellite communication
• time dissemination
• time of arrival (TOA) estimation

Multiple access interference (MAI) is one of the unstable sources of the two-way satellite time and frequency transfer (TWSTFT), and causes an estimation error of the signal arrival time. To suppress MAI, the successive interference cancellation ( SIC) procedure is implemented on the software-defined receiver. It generates MAIs and subtracts them from the received signal to become an interference-free signal. By performing TWSTFT with SIC, the short-term stability of the UTC(TL)UTC(KRIS) was improved so that the time deviations were reduced from 0.67 tau-(1/2) to 0.48 tau-(1/2) ns, and the long-term measurement results were consistent with those obtained by the conventional receiver.

• 出版日期2017-6