CAJ | 학술논문

从多输入多输出(multiple-input and multiple-output,MIMO)系统所设计的Alamouti码中得到启发,针对在无线协同信道之上的同步协作中继系统提出了一种新的通信方案.为了在大中断率和低成对误码率(PEP)的情况下能有效地传送信号,源天线采用功率分配波束形成技术,中继节点采用放大转发(amplify and forward,AF)技术.研究和仿真表明,对给定效率R,所提出的模型与以前的通信方案尤其是广播通信模型相比,在中断率和成对误码率上都有明显的改善.这一发现可能会对未来的同步协作中继通信系统的设计有显著的影响.
종다수입다수출(multiple-input and multiple-output,MIMO)계통소설계적Alamouti마중득도계발,침대재무선협동신도지상적동보협작중계계통제출료일충신적통신방안.위료재대중단솔화저성대오마솔(PEP)적정황하능유효지전송신호,원천선채용공솔분배파속형성기술,중계절점채용방대전발(amplify and forward,AF)기술.연구화방진표명,대급정효솔R,소제출적모형여이전적통신방안우기시엄파통신모형상비,재중단솔화성대오마솔상도유명현적개선.저일발현가능회대미래적동보협작중계통신계통적설계유현저적영향.
Inspired by the designation of Alamouti code for MIMO system,this paper proposed a novel communication scheme for the synchronous cooperative relay system over a wireless-hop coherent channel. To efficiently transmit signals with large outage probability and low PEP,source antennas adopted power allocated beamforming technic and relay nodes implemented AF protocol, respectively. Analysis and simulations show that the outage probability and pairwise error probability of the proposed model, for the given special efficiency R, are remarkably improved, which is compared with the previous communication scheme, especially the broadcast communication model. This finding may have significant impact on future design of synchronous cooperative relay communication system.