By Jiadong Sun, Jingnan Liu, Shiwei Fan, Xiaochun Lu
China satellite tv for pc Navigation convention (CSNC) 2015 Proceedings provides chosen learn papers from CSNC2015, held in the course of 13th-15th might in Xian, China. The subject matter of CSNC2015 is Opening-up, Connectivity and Win-win. those papers speak about the applied sciences and purposes of the worldwide Navigation satellite tv for pc process (GNSS), and the most recent development made within the China BeiDou process (BDS) particularly. they're divided into 10 subject matters to compare the corresponding classes in CSNC2015, which widely lined key issues in GNSS. Readers can know about the BDS and hold abreast of the newest advances in GNSS options and purposes.
SUN Jiadong is the manager fashion designer of the Compass/ BDS, and the academician of chinese language Academy of Sciences (CAS); LIU Jingnan is a professor at Wuhan college. FAN Shiwei is a researcher at China satellite tv for pc Navigation workplace; LU Xiaochun is an academician of chinese language Academy of Sciences (CAS).
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Extra resources for China Satellite Navigation Conference (CSNC) 2015 Proceedings: Volume II
Com B. cn Y. cn © Springer-Verlag Berlin Heidelberg 2015 J. Sun et al. 1007/978-3-662-46635-3_4 37 38 C. Tang et al. amplitude and phase caused by ISI and ICI will degraded the communication performance of Beidou satellite navigation communication system . Specially, the inter satellite channel have the nonlinear feature which produced nonlinear interference. The nonlinear ISI and ICI which combined the nonlinear interference and ISI or ICI is further increasing the difﬁculty of decoding. How to degrade the nonlinear ISI and nonlinear ICI is hot point in research of Beidou satellite navigation communication system .
Fan (&) Á Y. Yang Á M. com © Springer-Verlag Berlin Heidelberg 2015 J. Sun et al. 1007/978-3-662-46635-3_2 15 16 J. Fan et al. requirements and characteristics of the Lagrange navigation system. The signal designed is fully and rationally utilizing spectrum with the space tracking and navigation of spacecraft users sharing the same channel, namely the system using the orbit determination and time synchronization link also providing radio ranging service for all customer spacecraft, which greatly simpliﬁes the load on the satellite design complexity but increases of signal design difﬁculty, including signal frequency selection and modulation mode selection, coding scheme, especially considering the effect of signal near-far effect for longer transmission distance.
The mainly nonlinear model includes the memory polynomial model and Volterra model. Volterra model is greater adaptation and higher accuracy. With large enough order of Volterra model, it can eliminate all kinds of nonlinear interference, and it is superior in the precision than memory polynomial model. Truncate of the Volterra ﬁlter model at a certain length derived by the required accuracy will ensure the fast signal pre-distortion. Volterra series are memory expansion of Tyler series, and it can be written as 4 Nonlinear Equalization with Symbol Error Aided … zðtÞ ¼ 1 Z1 1 Z X k¼0 41 Z1 ÁÁÁ À1 À1 gk ðs1 ; s2 ; .