A Novel Push-To-Talk Service over Beidou-3 Satellite Navigation System

被引：0
|
作者：
Huo, Yincheng [1 ]
Ao, Zhen [1 ]
Zhao, Zhuting [2 ]
Liu, Huiru [3 ]
He, Guiqing [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Elect & Informat, Xian, Peoples R China
[2] Ningbo Maritime Networks Com Ltd, Ningbo, Peoples R China
[3] Beijing Electromech Engn Inst, Beijing, Peoples R China
来源：
CONFERENCE PROCEEDINGS OF 2019 IEEE INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING, COMMUNICATIONS AND COMPUTING (IEEE ICSPCC 2019) | 2019年
关键词：
BDS; Vocoder; Push-To-Talk; SELP; QUANTIZATION;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
BDS-3(Beidou Navigation Satellite System) started to provide global services since Dec 2018. The two-way SMS(short message service) of the BDS is an advantage over other satellite navigation systems. However, BDS SMS only supports text, causes inconvenience in many situations. We had developed a 300bps vocoder in 2017, which led to a 2-second voice message over BDS-1. Based on it, we used a SELP (sinusoidal excitation linear prediction) algorithm to develop a 600bps vocoder over BDS-3. Compared with the former one, voice quality has been improved from MOS 2.3 to MOS 3.5, coding delay has been increased from more than 200ms to 100ms. The voice length has been increased to 25 seconds. Our effort can offer subscribers a Push-To-Talk service over BDS. In May 2018 the novel technology has been recommended as a candidate to "International Maritime Rescue Satellite Terminal Standard". Our efforts have very important theoretical research significance and practical reference value for BDS.
引用
收藏
页数：6
相关论文
共 50 条
  • [41] BeiDou Regional Navigation Satellite System Completed
    Liu Fei
    Aerospace China, 2012, 13 (04) : 6 - 8
  • [42] Update on BeiDou Navigation Satellite System (BDS)
    Shen, Jun
    Wu, Haitao
    PROCEEDINGS OF THE 29TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS+ 2016), 2016, : 2431 - 2485
  • [43] Global capabilities of BeiDou Navigation Satellite System
    Jun Lu
    Xia Guo
    Chengeng Su
    Satellite Navigation, 1
  • [44] Update on the BeiDou Navigation Satellite System (BDS)
    Shen, Jun
    PROCEEDINGS OF THE 31ST INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS+ 2018), 2018, : 768 - 803
  • [45] BeiDou Navigation Satellite System of China, for the world
    PROCEEDINGS OF THE 25TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS 2012), 2012, : 1686 - 1727
  • [46] Global capabilities of BeiDou Navigation Satellite System
    Lu, Jun
    Guo, Xia
    Su, Chengeng
    SATELLITE NAVIGATION, 2020, 1 (01):
  • [47] Operation and Development of BeiDou Navigation Satellite System
    Li, Jing
    Zhang, Jiantong
    Zhang, Bingqi
    Shen, Bing
    2015 INTERNATIONAL ASSOCIATION OF INSTITUTES OF NAVIGATION WORLD CONGRESS (IAIN), 2015,
  • [48] Update on the BeiDou Navigation Satellite System (BDS)
    Shen, Jun
    PROCEEDINGS OF THE ION 2019 PACIFIC PNT MEETING, 2019, : 1 - 28
  • [49] The open service signal in space navigation data comparison of the global positioning system and the BeiDou navigation satellite system
    Jan, Shau-Shiun
    Tao, An-Lin
    Sensors (Switzerland), 2014, 14 (08): : 15182 - 15202
  • [50] The Open Service Signal in Space Navigation Data Comparison of the Global Positioning System and the BeiDou Navigation Satellite System
    Jan, Shau-Shiun
    Tao, An-Lin
    SENSORS, 2014, 14 (08): : 15182 - 15202
12345