公开(公告)号：US20090129451A1

公开(公告)日：2009-05-21

申请号：US12346476

申请日：2008-12-30

Applicant: Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

Inventor： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

IPC: H04B1/38

CPC classification number: H04L1/002 ,  H04L1/0002 ,  H04L1/206 ,  Y02D50/10

Abstract: A method for controlling a data transmission rate of at least one transceiver in a wireless system, the transceiver including a transmitter and a receiver, the method including the steps of: determining a signal quality characteristic corresponding to a signal received at the receiver by measuring a difference between one or more reference constellation points and one or more received constellation points, the signal quality characteristic representing an estimation of signal degradation through the wireless communication channel; and modifying a data transmission rate of the transmitter as a function of the signal quality characteristic. The step of modifying the data transmission rate of the transmitter includes: determining lower and upper threshold levels representing reference minimum and maximum signal quality characteristics, respectively, corresponding to the data transmission rate; measuring a signal quality characteristic of the received signal; determining whether the measured signal quality characteristic is within the lower and upper threshold levels; maintaining the data transmission rate when the measured signal quality characteristic is between the lower and upper threshold levels; and increasing the data transmission rate when the measured signal quality characteristic is less than one or more lower threshold levels associated with one or more corresponding higher data rates.

Abstract translation: 一种用于控制无线系统中的至少一个收发器的数据传输速率的方法，所述收发器包括发射机和接收机，所述方法包括以下步骤：确定与在接收机处接收的信号相对应的信号质量特性， 一个或多个参考星座点与一个或多个接收到的星座点之间的差异，信号质量特性表示通过无线通信信道的信号劣化的估计; 以及根据信号质量特性修改发射机的数据传输速率。 修改发射机的数据传输速率的步骤包括：分别对应于数据传输速率确定代表参考最小和最大信号质量特性的较低和较高阈值电平; 测量接收信号的信号质量特性; 确定测量的信号质量特性是否在下限和上限阈值水平之内; 当测量的信号质量特性在下限和上限阈值之间时，保持数据传输速率; 以及当测量的信号质量特性小于与一个或多个相应较高数据速率相关联的一个或多个下限阈值时，增加数据传输速率。

公开(公告)号：US20070230431A1

公开(公告)日：2007-10-04

申请号：US10562617

申请日：2004-06-30

Applicant: Bas Driesen ,  Ra'anan Gil

Inventor： Bas Driesen ,  Ra'anan Gil

IPC: H04J3/00

CPC classification number: H04L27/2613 ,  H04B7/0669 ,  H04B7/0684 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0202 ,  H04L25/0226

Abstract: A method and apparatus are disclosed for transmitting symbols in a multiple antenna communication system according to a frame structure, such that the symbols can be interpreted by a lower order receiver (i.e., a receiver having a fewer number of antennas than the transmitter). The disclosed frame structure comprises a legacy preamble having at least one long training symbol and N-I additional long training symbols that are transmitted on each of N transmit antennas. The legacy preamble may be, for example, an 802.11 a/g preamble that includes at least one short training symbol, at least one long training symbol and at least one SIGNAL field. A sequence of each of the long training symbols on each of the N transmit antennas are time orthogonal. The long training symbols can be time orthogonal by introducing a phase shift to each of long training symbols relative to one another.

Abstract translation: 公开了一种用于根据帧结构在多天线通信系统中发送符号的方法和装置，使得符号可以由较低阶接收机（即，具有比发射机更少数量的天线的接收机）来解释。 所公开的帧结构包括具有在N个发射天线中的每一个上发射的至少一个长训练符号和N-1个附加长训练符号的传统前同步码。 传统前置码可以是例如包括至少一个短训练符号，至少一个长训练符号和至少一个信号字段的802.11a / g前导码。 每个N个发射天线中的每个长训练符号的序列是时间正交的。 长训练符号可以通过相对于彼此引入相对于每个长训练符号而进行时间正交。

公开(公告)号：US20050013391A1

公开(公告)日：2005-01-20

申请号：US10621862

申请日：2003-07-17

Applicant: Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Kriedte

Inventor： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Kriedte

IPC: H04J11/00 ,  H04B17/00 ,  H04L1/20 ,  H04L27/06

CPC classification number: H04L1/208 ,  H04L1/20

Abstract: In a wireless system including a wireless communication channel, a method for estimating a signal quality of a received signal includes the steps of receiving a signal from the wireless communication channel, the received signal including at least one field that is modulated and encoded in a substantially fixed manner, and generating at least one reference field based, at least in part, on the at least one field and on a channel estimation signal. The channel estimation signal is representative of at least one characteristic of the wireless communication channel. The method further includes the step of generating a signal quality estimate as a function of the at least one field in the received signal and the generated at least one reference field.

Abstract translation: 在包括无线通信信道的无线系统中，用于估计接收信号的信号质量的方法包括以下步骤：从无线通信信道接收信号，所接收的信号包括被实质上被调制和编码的至少一个场 至少部分地基于所述至少一个场和信道估计信号生成至少一个参考场。 信道估计信号表示无线通信信道的至少一个特性。 该方法还包括以下步骤：根据所接收的信号和所生成的至少一个参考场产生作为至少一个场的函数的信号质量估计。

公开(公告)号：US08503577B2

公开(公告)日：2013-08-06

申请号：US10621862

申请日：2003-07-17

Applicant: Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

Inventor： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

IPC: H04L27/06

CPC classification number: H04L1/208 ,  H04L1/20

Abstract: In a wireless system including a wireless communication channel, a method for estimating a signal quality of a received signal includes the steps of receiving a signal from the wireless communication channel, the received signal including at least one field that is modulated and encoded in a substantially fixed manner, and generating at least one reference field based, at least in part, on the at least one field and on a channel estimation signal. The channel estimation signal is representative of at least one characteristic of the wireless communication channel. The method further includes the step of generating a signal quality estimate as a function of the at least one field in the received signal and the generated at least one reference field.

Abstract translation: 在包括无线通信信道的无线系统中，用于估计接收信号的信号质量的方法包括以下步骤：从无线通信信道接收信号，所接收的信号包括被实质上被调制和编码的至少一个场 至少部分地基于所述至少一个场和信道估计信号生成至少一个参考场。 信道估计信号表示无线通信信道的至少一个特性。 该方法还包括以下步骤：根据所接收的信号和所生成的至少一个参考场产生作为至少一个场的函数的信号质量估计。

公开(公告)号：US07499486B2

公开(公告)日：2009-03-03

申请号：US10305554

申请日：2002-11-27

Applicant: Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

Inventor： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

IPC: H04L1/00 ,  H04J3/16

CPC classification number: H04L1/002 ,  H04L1/0002 ,  H04L1/206 ,  Y02D50/10

Abstract: In a wireless system comprising at least one transceiver configurable for communication over a wireless communication channel, the transceiver comprising a transmitter and a receiver, a method for controlling a data transmission rate of the at least one transceiver comprises the steps of: (i) determining a signal quality characteristic corresponding to a signal received at the receiver by measuring a difference between one or more reference constellation points and one or more received constellation points, the signal quality characteristic representing an estimation of signal degradation; and (ii) modifying a data transmission rate of the transmitter based, at least in part, on the signal quality characteristic.

Abstract translation: 一种无线系统，包括至少一个可配置用于通过无线通信信道进行通信的收发机，所述收发机包括发射机和接收机，用于控制所述至少一个收发机的数据传输速率的方法包括以下步骤：（i）确定 通过测量一个或多个参考星座点与一个或多个接收到的星座点之间的差异，所述信号质量特征对应于在接收机处接收的信号，所述信号质量特性表示信号劣化的估计; 以及（ii）至少部分地基于所述信号质量特性来修改所述发射机的数据传输速率。

公开(公告)号：US08615033B2

公开(公告)日：2013-12-24

申请号：US12346476

申请日：2008-12-30

Applicant: Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

Inventor： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

IPC: H04B1/38

CPC classification number: H04L1/002 ,  H04L1/0002 ,  H04L1/206 ,  Y02D50/10

Abstract: A method for controlling a transmission rate of at least one transceiver, the transceiver including a transmitter and a receiver, includes: determining a signal quality characteristic corresponding to a signal received at the receiver by measuring a difference between one or more reference constellation points and one or more received constellation points, and modifying a transmission rate of the transmitter over a wireless communication channel as a function of the signal quality characteristic. The step of modifying the transmission rate over the wireless communication channel includes: determining lower and upper threshold levels representing reference minimum and maximum signal quality characteristics, respectively, corresponding to the transmission rate; maintaining the transmission rate when the measured signal quality characteristic is between the lower and upper threshold levels; and increasing the transmission rate when the signal quality characteristic is less than one or more lower threshold levels associated with one or more corresponding higher transmission rates.

Abstract translation: 一种用于控制至少一个收发器的传输速率的方法，所述收发器包括发射机和接收机，包括：通过测量一个或多个参考星座点与一个参考星座点之间的差异来确定与在接收机处接收到的信号相对应的信号质量特性 或更多的接收到的星座点，以及作为信号质量特性的函数，通过无线通信信道修改发射机的传输速率。 通过无线通信信道修改传输速率的步骤包括：分别对应于传输速率确定代表参考最小和最大信号质量特性的较低和较高阈值电平; 当测量的信号质量特性在下限阈值和上限阈值之间时，保持传输速率; 以及当信号质量特性小于与一个或多个相应较高传输速率相关联的一个或多个下限阈值时，增加传输速率。