首页> 外国专利> - Space-Time Array Receive System Using Chip-Level Time-Reference Beamforming Algorithm

- Space-Time Array Receive System Using Chip-Level Time-Reference Beamforming Algorithm

机译:-使用芯片级时间参考波束形成算法的时空阵列接收系统

摘要

The present invention relates to a space-time array receiving system applying chip level and time reference beamforming techniques to a CDMA wireless communication system. Applying the adaptive beamforming technique using an array antenna to a base station increases power efficiency and reduces unnecessary interference by directionally transmitting and receiving radio waves according to spatial distribution of users, ultimately reducing communication quality and service radius per base station. Subscriber capacity can be increased. In the present invention, a chip level beamforming technique for multiplying a received snapshot signal at a chip level before despreading a weight vector estimated through an adaptive beamforming algorithm while using an existing demodulator structure in a reverse link of a CDMA wireless communication system. Apply. In addition, since the adaptive beamforming algorithm used in the present invention requires a time reference signal in the adaptive optimization process, a reference signal is generated by using the estimated symbol after the Rake synthesis and the spreading code and the channel estimate fed back from the finger receiver of the demodulator. Apply to adaptive optimization process. By doing so, it is possible not only to increase power efficiency by forming optimal directional beams, but also to reduce unnecessary interference to increase communication quality, service radius per base station, and subscriber capacity. In addition, since the present invention can be applied without greatly changing the structure of the existing demodulator, real hardware can be easily implemented.
机译:本发明涉及一种空时阵列接收系统,该系统将码片级和时间基准波束形成技术应用于CDMA无线通信系统。通过根据用户的空间分布定向发送和接收无线电波,将使用阵列天线的自适应波束成形技术应用于基站可以提高功率效率并减少不必要的干扰,最终降低每个基站的通信质量和服务半径。订户容量可以增加。在本发明中,一种芯片级波束形成技术,用于在CDMA无线通信系统的反向链路中使用现有的解调器结构的同时,对通过自适应波束形成算法估计的权向量解扩之前,在芯片级别上对接收到的快照信号进行乘法。应用。另外,由于本发明中使用的自适应波束成形算法在自适应优化过程中需要时间参考信号,因此通过使用Rake合成之后的估计符号和从基站反馈的扩频码以及信道估计来生成参考信号。解调器的手指接收器。适用于自适应优化过程。这样,不仅可以通过形成最佳的定向波束来提高功率效率,而且可以减少不必要的干扰,从而提高通信质量,每个基站的服务半径和用户容量。另外,由于可以在不大大改变现有解调器的结构的情况下应用本发明,因此可以容易地实现真实的硬件。

著录项

  • 公开/公告号KR100329110B1

    专利类型

  • 公开/公告日2002-03-18

    原文格式PDF

  • 申请/专利权人 한국전자통신연구원;

    申请/专利号KR20000004112

  • 发明设计人 박재준;경문건;강양기;

    申请日2000-01-28

  • 分类号H04B1/76;

  • 国家 KR

  • 入库时间 2022-08-22 00:29:50

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