公开(公告)号：US20070219717A1

公开(公告)日：2007-09-20

申请号：US11686819

申请日：2007-03-15

Applicant: Yu-Jen CHANG

Inventor： Yu-Jen CHANG

IPC: G01C21/32

CPC classification number: G01C21/3492 ,  G01C21/3691 ,  G08G1/091 ,  G08G1/092 ,  G08G1/096716 ,  G08G1/09675 ,  G08G1/096775 ,  G08G1/096822 ,  G08G1/096827 ,  G08G1/096844 ,  G08G1/096861

Abstract: A safety navigation system applying wireless communication technology and a method therefor are provided, wherein road information transmitted by wireless communication technology is received and statistically analyzed to learn about road sections that are inconvenient for driving or cannot be passed through, so as to decelerate when driving on the road section or avoid the road section altogether when planning routes, thereby ensuring a driver's safety.

Abstract translation: 提供一种应用无线通信技术的安全导航系统及其方法，其中接收并统计分析通过无线通信技术发送的道路信息，以了解不方便驾驶或不能通过的路段，以便在驾驶时减速 在道路部分，或者在规划路线时完全避开路段，从而确保司机的安全。

公开(公告)号：US20110122961A1

公开(公告)日：2011-05-26

申请号：US12628810

申请日：2009-12-01

Applicant: Tzu-Hsien SANG ,  Yu-Jen CHANG

Inventor： Tzu-Hsien SANG ,  Yu-Jen CHANG

IPC: H04B7/02

CPC classification number: H04B7/0617 ,  H04B7/0434

Abstract: A communication device adopted for a multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) system and a method thereof are provided. The MIMO-OFDM system comprises the communication device and a corresponding communication device, and they communicate with each other. The communication device comprises a transceiving module, a singular value decomposition (SVD) operation module, and an interpolation operation module. The transceiving module receives a channel state information (CSI) from the corresponding communication device, wherein the CSI comprises CSIs of a plurality of selected subcarriers. For each of the selected subcarriers, the SVD module performs an SVD decomposition operation on the channel matrix representing the CSI of the selected subcarrier to obtain a decomposed result, wherein the decomposed result comprises a beamforming matrix, an SVD matrix, and a decoding matrix. The interpolation operation module performs interpolations on the beamforming matrices of the selected subcarriers to derive beamforming matrices of the unselected subcarriers. The interpolation operation module performs interpolations on the decoding matrixes of the selected subcarriers to derive obtain decoding matrices of the unselected subcarriers.

Abstract translation: 提供了一种用于多输入多输出正交频分复用（MIMO-OFDM）系统的通信装置及其方法。 MIMO-OFDM系统包括通信设备和对应的通信设备，并且它们彼此通信。 通信设备包括收发模块，奇异值分解（SVD）操作模块和内插操作模块。 收发模块从相应的通信设备接收信道状态信息（CSI），其中CSI包括多个所选子载波的CSI。 对于每个所选择的子载波，SVD模块对表示所选择的子载波的CSI的信道矩阵执行SVD分解操作，以获得分解结果，其中分解结果包括波束成形矩阵，SVD矩阵和解码矩阵。 内插操作模块对所选择的子载波的波束形成矩阵执行插值，以导出未选择的子载波的波束形成矩阵。 内插操作模块对所选择的子载波的解码矩阵执行插值，以得到未选择的子载波的获得解码矩阵。