摘要
针对通信定位综合一体化的趋势和未来移动通信发展的需要,提出了一种新的四相时空调制扩频技术,设计了一种利用36元均匀间隔圆阵天线发射的通信定位综合化系统。该系统除具有直接序列扩频PSK的通信能力外,还能测定用户方位和传播时延,具有抗多径、抗多用户干扰的潜力。文中给出了信号的编码、调制、发射、解扩和方位角估计等关键技术的解决方案,并分析了误码和测角性能。
To meet the challenge of future mobile communication and integrated communication and radiolocation systems, a new spread-spectrum system with space-time modulation technology is proposed, with which the system can transmit azimuth and communication message. The transmitting scheme with 36 elements circular array antennae and the spread-spectrum receiver are designed. The performance of the bit error rate and direction-finding are analyzed. Simulation results show that the performance of the bit error rate and spectrum have no influence when the modulated signal carries azimuth message. This technology is the development of modulation theory and a new form of smart antenna.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2001年第5期449-453,共5页
Journal of University of Electronic Science and Technology of China
基金
国家自然科学基金资助项目
编号: 69972018
关键词
调制技术
扩频系统
测向
无线定位
移动通信
modulation
spread-spectrum system
direction-finding
wireless location
mobile communication
