Robustness Analysis of Space-time Coding in High Speed Railway Communication System

2017 ◽  
Author(s):  
Qichang Li ◽  
Jiaxun Lu ◽  
Pingyi Fan
Keyword(s):  
Communication System ◽  
High Speed ◽  
Robustness Analysis ◽  
Space Time ◽  
High Speed Railway ◽  
Space Time Coding ◽  
Time Coding

scholarly journals A Cooperative Mobile Satellite Communication System with the Dynamic Space-Time Coding

2015 ◽  
Vol 2015 ◽  
pp. 1-8
Author(s):  
Gengrun Wang ◽  
Bangning Zhang ◽  
Kegang Pan ◽  
Aijun Liu ◽  
Daoxing Guo
Keyword(s):  
Communication System ◽  
Satellite Communication ◽  
Space Time ◽  
Closed Form Expression ◽  
Satellite Communication System ◽  
Space Time Coding ◽  
Time Coding ◽  
Mobile Satellite ◽  
Mobile Satellite Communication ◽  
Diversity Gains

Channels of mobile satellite communications are affected by multipath fading and shadowing attenuation. At the same time, diversity gains are believed to improve the transmission reliability in fading channels. Considering that the traditional Space-Time Coding (STC) is not suitable for the cooperative mobile satellite communication, in this paper, a new cooperative mobile satellite communication system is proposed based on the Dynamic Space-Time Coding (D-STC). The transmitting energy of the proposed scheme is saved by avoiding forwarding erroneous signals in cooperative users. Meanwhile, this system benefits from diversity gains and the transmission is robust. Additionally, a closed-form expression of the outage probability for the proposed scheme is derived, and then it is demonstrated that this scheme is much better than the existing noncooperative scheme and schemes with traditional STCs in the outage performance. Finally, the analytical result is supported and validated by numerical simulations.

Simulation and Application of Space-Time Coding in OFDM System in Coal Mines

2014 ◽  
Vol 989-994 ◽  
pp. 3902-3905
Author(s):  
Jing Xin Wei ◽  
Chun Sun
Keyword(s):  
Communication System ◽  
System Performance ◽  
Coal Mines ◽  
Low Complexity ◽  
Space Time ◽  
Ofdm System ◽  
Space Time Coding ◽  
Structure Diagram ◽  
Time Coding ◽  
Ber Performance

This research is conducted with the objective of improving the OFDM system in coal mines with regard to its defects and puts forward a structure diagram of STBC-OFDM transceiver for systems which require low complexity with a simulation of the system performance. Through the simulation, in which the STBC-OFDM communication system in coal mines is employed, the BER performance of the OFDM system is improved and the complexity and cost of the receiver is lowered with a significant reduction in daily maintenance.

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