CAJ | 학술논문

移动通信WiFi网络与无线传感网络交叉组网时，容易产生同频干扰，影响通信质量和信道传输性能。在交叉组网过程中需要对同频干扰进行有效抑制，提高通信可靠性。传统的交叉组网同频干扰抑制算法采用盲源分离抗干扰算法，在交叉组网被动相干定位时时延较大，通信出现延迟。针对上述问题，提出一种改进的交叉组网同频干扰抑制算法，采用传统的盲源分离技术进行信道同频带内干扰噪声分离，对WiFi信道进行信息编码，采用OQPSK调制方法让整个网络都切换到选定的无干扰信道上，引入干扰避免机制，实现交叉组网信道优化设计。仿真实验表明，采用该算法进行同频干扰抑制和优化组网设计，有能效抑制重度的同频干扰，提高组网节点的吞吐量，保证了通信的可靠性。
이동통신WiFi망락여무선전감망락교차조망시，용역산생동빈간우，영향통신질량화신도전수성능。재교차조망과정중수요대동빈간우진행유효억제，제고통신가고성。전통적교차조망동빈간우억제산법채용맹원분리항간우산법，재교차조망피동상간정위시시연교대，통신출현연지。침대상술문제，제출일충개진적교차조망동빈간우억제산법，채용전통적맹원분리기술진행신도동빈대내간우조성분리，대WiFi신도진행신식편마，채용OQPSK조제방법양정개망락도절환도선정적무간우신도상，인입간우피면궤제，실현교차조망신도우화설계。방진실험표명，채용해산법진행동빈간우억제화우화조망설계，유능효억제중도적동빈간우，제고조망절점적탄토량，보증료통신적가고성。
The WiFi mobile communication network and wireless sensor network are easy to produce the same frequency in-terference, and affect the communication quality and channel transmission performance. The effective suppression of inter-ference on the same frequency in the cross network process is needed, and improves the reliability of communication. Sup-pression algorithm based on blind source separation algorithm of anti disturbance of same frequency interference is the tra-ditional cross network method, and cross network passive coherent location from time to time delay is larger, communica-tion delay is occurred. In view of the above problems, the same frequency interference suppression algorithm for cross net-work is improved, the blind source separation technique of traditional separate noise interference channel with frequency band, we encode the information on the WiFi channel, interference free channel is optimized by using OQPSK modulation method for the whole network, interference avoidance mechanism is introduced, the cross network channel optimization de-sign is realized. Simulation results show that, the new method can suppress severe co-channel interference, improve the throughput of network nodes, and it assures the reliability of communication.