公开(公告)号：US08000398B2

公开(公告)日：2011-08-16

申请号：US12128430

申请日：2008-05-28

Applicant: Zhengang Pan ,  Wing Chau Chan ,  XueYuan Zhao ,  Chi Ming Lo

Inventor： Zhengang Pan ,  Wing Chau Chan ,  XueYuan Zhao ,  Chi Ming Lo

IPC: H04K1/10

CPC classification number: H04L5/005 ,  H04L5/0007 ,  H04L27/2613

Abstract: A method of time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM) communication, including the steps of: preparing OFDM-body; generating pseudo random (PN) sequence as a training signal; manipulating the PN sequence to concentrate the energy distribution thereof to the same bandwidth of sub-carriers of the OFDM-body; offsetting the manipulated PN sequence to align with frequency spectrum of the sub-carriers; and inserting the offset PN sequence as prefix of a TDS-OFDM data frame. The manipulating step may include the step of repeating the PN sequence by N times, wherein the spectrum of the repeated PN sequence concentrates on discrete bundles of sub-carriers, i.e., on one sub-carrier every N sub-carriers or M adjacent sub-carriers every MN sub-carriers, where M is an integer determined by the time duration ratio of the OFDM body and prefix. Alternatively, the manipulating step may include the step of expanding the PN sequence by N times, wherein the spectrum of the expanded PN sequence concentrates on a block of continual adjacent sub-carriers, the bandwidth of the PN sequence is 1/N of the whole bandwidth.

Abstract translation: 一种时域同步正交频分复用（TDS-OFDM）通信方法，包括以下步骤：准备OFDM体; 生成伪随机（PN）序列作为训练信号; 操纵PN序列以将其能量分布集中到OFDM体的子载波的相同带宽; 抵消所操纵的PN序列以与子载波的频谱对准; 并将偏移PN序列作为TDS-OFDM数据帧的前缀插入。 操纵步骤可以包括重复PN序列N次的步骤，其中重复的PN序列的频谱集中在离散的子载波束上，即在每N个子载波或M个相邻子载波上的一个子载波上， 承载每个MN子载波，其中M是由OFDM体和前缀的持续时间比确定的整数。 或者，操纵步骤可以包括将PN序列扩展N次的步骤，其中扩展的PN序列的频谱集中在连续的相邻子载波的块上，PN序列的带宽是整个的1 / N 带宽。

公开(公告)号：US07941302B2

公开(公告)日：2011-05-10

申请号：US12129896

申请日：2008-05-30

Applicant: Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

Inventor： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC: G06F17/50 ,  H04L27/00

CPC classification number: H04B17/0087

Abstract: Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

Abstract translation: 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US20090299717A1

公开(公告)日：2009-12-03

申请号：US12129896

申请日：2008-05-30

Applicant: Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

Inventor： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC: G06F17/50

CPC classification number: H04B17/0087

Abstract: Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

Abstract translation: 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US20090296834A1

公开(公告)日：2009-12-03

申请号：US12128430

申请日：2008-05-28

Applicant: Zhengang Pan ,  Wing Chau Chan ,  XueYuan Zhao ,  Chi Ming Lo

Inventor： Zhengang Pan ,  Wing Chau Chan ,  XueYuan Zhao ,  Chi Ming Lo

IPC: H04L27/28

CPC classification number: H04L5/005 ,  H04L5/0007 ,  H04L27/2613

Abstract: A method of time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM) communication, including the steps of: preparing OFDM-body 402; generating pseudo random (PN) sequence 403 as a training signal; manipulating the PN sequence 403 to concentrate the energy distribution thereof to the same bandwidth of sub-carriers of the OFDM-body; offsetting the manipulated PN sequence to align with frequency spectrum of the sub-carriers 406; and inserting the offset PN sequence as prefix 401 of a TDS-OFDM data frame 400. The manipulating step may include the step of repeating the PN sequence by N times, wherein the spectrum of the repeated PN sequence concentrates on discrete bundles of sub-carriers, i.e., on one sub-carrier every N sub-carriers or M adjacent sub-carriers every MN sub-carriers, where M is an integer determined by the time duration ratio of the OFDM body and prefix.. Alternatively, the manipulating step may include the step of expanding the PN sequence by N times, wherein the spectrum of the expanded PN sequence concentrates on a block of continual adjacent sub-carriers, the bandwidth of the PN sequence is 1/N of the whole bandwidth.

Abstract translation: 一种时域同步正交频分复用（TDS-OFDM）通信方法，包括以下步骤：准备OFDM体402; 生成伪随机（PN）序列403作为训练信号; 操纵PN序列403以将其能量分布集中到OFDM体的子载波的相同带宽; 抵消所操纵的PN序列以与副载波406的频谱对准; 并且将偏移PN序列作为TDS-OFDM数据帧400的前缀401插入。操纵步骤可以包括将PN序列重复N次的步骤，其中重复的PN序列的频谱集中在离散的子载波束上 即每N个子载波上每N个子载波或M个相邻子载波在一个子载波上，其中M是由OFDM主体和前缀的持续时间比确定的整数。或者，操纵步骤可以 包括将PN序列扩展N次的步骤，其中扩展的PN序列的频谱集中在连续的相邻子载波的块上，PN序列的带宽是整个带宽的1 / N。