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

页数：6

共 42 条

[1] A Novel Satellite Selecting Algorithm for BeiDou Navigation Satellite System [J].

Li, Wen ;

Zhu, Lidong .

2015 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS & SIGNAL PROCESSING (WCSP), 2015,

[2] PeerTalk: A Push-to-Talk and Instant Messaging Service for Tactical Networks [J].

Casini, Enrico ;

Suri, Niranjan ;

Breedy, Maggie ;

Budulas, Peter ;

Kovach, Jesse ;

Roy, Radhika .

2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013), 2013, :1476-1481

[3] A Hybrid Extension for IP Multicasting in Push-to-talk over Cellular Systems [J].

Gebarowski, Tomasz .

INTERNATIONAL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS, 2012, 58 (01) :77-83

[4] Global capabilities of BeiDou Navigation Satellite System [J].

Jun Lu ;

Xia Guo ;

Chengeng Su .

Satellite Navigation, 1

[5] Global capabilities of BeiDou Navigation Satellite System [J].

Lu, Jun ;

Guo, Xia ;

Su, Chengeng .

SATELLITE NAVIGATION, 2020, 1 (01)

[6] Operation and Development of BeiDou Navigation Satellite System [J].

Li, Jing ;

Zhang, Jiantong ;

Zhang, Bingqi ;

Shen, Bing .

2015 INTERNATIONAL ASSOCIATION OF INSTITUTES OF NAVIGATION WORLD CONGRESS (IAIN), 2015,

[7] Global voice chat over short message service of Beidou navigation system [J].

Wei, Yijing ;

Liu, Huiru ;

Ma, Junkai ;

Zhao, Yuting ;

Lu, Hu ;

He, Guiqing .

PROCEEDINGS OF THE 2019 14TH IEEE CONFERENCE ON INDUSTRIAL ELECTRONICS AND APPLICATIONS (ICIEA 2019), 2019, :1994-1997

[8] BeiDou-3 Global Positioning System Officially Initiates Construction [J].

ZONG Wen .

AerospaceChina, 2017, 18 (03) :60-60

[9] Analysis of the Beidou navigation satellite system: Interoperability and performance [J].

Lu Jun ;

Su ChenGeng ;

Hu Min ;

Tang ZuPing ;

Yuan HaiBo ;

Xu JunYi ;

Shen JianHua .

SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA, 2021, 51 (01)

[10] The space–time references of BeiDou Navigation Satellite System [J].

Chunhao Han ;

Li Liu ;

Zhiwu Cai ;

Yuting Lin .

Satellite Navigation, 2

← 1 2 3 4 5 →