公开(公告)号：US07889798B2

公开(公告)日：2011-02-15

申请号：US10627962

申请日：2003-07-28

Applicant: Olli Piirainen ,  Miia Karjalainen

Inventor： Olli Piirainen ,  Miia Karjalainen

IPC: H04K1/10

CPC classification number: H04L27/2624 ,  H03G11/00

Abstract: A method of reducing the peak-to-mean ratio of a multi-carrier signal includes the steps of: generating a residual signal from the multicarrier signal, the residual signal representing the difference between the multicarrier signal and a hard-clipped multicarrier signal. The method also includes the steps of applying a least squares function to the residual signal for each carrier of the multi-carrier signal, thereby generating a minimized residual signal for each carrier and combining the minimized residual signals and the multicarrier signal.

Abstract translation: 降低多载波信号的峰均比的方法包括以下步骤：从多载波信号产生残差信号，残差信号表示多载波信号与硬限幅多载波信号之间的差。 该方法还包括以下步骤：对于多载波信号的每个载波对剩余信号应用最小二乘函数，从而为每个载波生成最小化的残余信号，并组合最小化的残余信号和多载波信号。

公开(公告)号：US07313114B2

公开(公告)日：2007-12-25

申请号：US10137700

申请日：2002-05-03

Applicant: Miia Karjalainen

Inventor： Miia Karjalainen

IPC: H04B7/216

CPC classification number: H04J13/18 ,  H04J13/004 ,  H04W72/02 ,  H04W72/0466 ,  H04W88/08

Abstract: The invention relates to a base transceiver station in a CDMA mobile telephone system, including a mechanism for maintaining a code tree which determines spreading codes to be used in the system, a mechanisms for selecting a spreading code from the code tree for the communication between the base transceiver station and terminal equipment communicating with the base transceiver station. The mechanisms for selecting a spreading code are configured to select a highest level in the code tree which includes at least one branch of the code tree whose spreading codes are allocatable, and allocate for use a spreading code generated from a branch of the selected level whose spreading codes are allocatable. The invention further relates to a method and a communication system in connection with Code Division Multiple Access (CDMA) technology.

Abstract translation: 本发明涉及一种CDMA移动电话系统中的基站收发台，包括用于维护代码树的机制，该机制确定在该系统中使用的扩展码;一种用于从代码树中选择扩展码用于通信的扩展码的机制 基站收发台和终端设备与基站通信。 用于选择扩展码的机制被配置为在代码树中选择最高级别，其中包括扩展码可分配的代码树的至少一个分支，并且分配使用从所选择的级别的分支生成的扩展码 扩展码是可分配的。 本发明还涉及一种与码分多址（CDMA）技术有关的方法和通信系统。

公开(公告)号：US07197287B2

公开(公告)日：2007-03-27

申请号：US11361356

申请日：2006-02-24

Applicant: Miia Karjalainen ,  Samu Saarinen ,  Kauko Heinikoski ,  Teemu Tolonen ,  Juha Ylinen ,  Jani Suonperä ,  Risto Lehtinen

Inventor： Miia Karjalainen ,  Samu Saarinen ,  Kauko Heinikoski ,  Teemu Tolonen ,  Juha Ylinen ,  Jani Suonperä ,  Risto Lehtinen

IPC: H04B1/04

CPC classification number: H03F1/3247 ,  H04B1/0475

Abstract: A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.

Abstract translation: 发射机补偿传输链中的非线性。 发射机包括例如第一形成装置，用于基于至少一组信号特性形成包括表征信号的量的至少一个状态扩展矢量。 所述发射机包括修改器，用于利用所述至少一个时域补偿参数向量和所述至少一个频域补偿参数向量来修改至少一个状态扩展向量的信号特征量，以形成预失真信号。 发射机包括用于从传输链的输出信号形成反馈信号的第二形成装置。 发射机包括用于适配至少一个时域补偿参数向量的适配器，用于基于发射信号和反馈信号之间的残余误差来适配至少一个频域补偿参数矢量。

公开(公告)号：US20060141955A1

公开(公告)日：2006-06-29

申请号：US11361356

申请日：2006-02-24

Applicant: Miia Karjalainen ,  Samu Saarinen ,  Kauko Heinikoski ,  Teemu Tolonen ,  Juha Ylinen ,  Jani Suonpera ,  Risto Lehtinen

Inventor： Miia Karjalainen ,  Samu Saarinen ,  Kauko Heinikoski ,  Teemu Tolonen ,  Juha Ylinen ,  Jani Suonpera ,  Risto Lehtinen

IPC: H04B1/04

CPC classification number: H03F1/3247 ,  H04B1/0475

Abstract: A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.

公开(公告)号：US07035601B2

公开(公告)日：2006-04-25

申请号：US10630975

申请日：2003-07-31

Applicant: Miia Karjalainen ,  Samu Saarinen ,  Kauko Heinikoski ,  Teemu Tolonen ,  Juha Ylinen ,  Jani Suonperä ,  Risto Lehtinen

Inventor： Miia Karjalainen ,  Samu Saarinen ,  Kauko Heinikoski ,  Teemu Tolonen ,  Juha Ylinen ,  Jani Suonperä ,  Risto Lehtinen

IPC: H04B1/04

CPC classification number: H03F1/3247 ,  H04B1/0475

Abstract: A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.

Abstract translation: 发射机补偿传输链中的非线性。 发射机包括例如第一形成装置，用于基于至少一组信号特性形成包括表征信号的量的至少一个状态扩展矢量。 所述发射机包括修改器，用于利用所述至少一个时域补偿参数向量和所述至少一个频域补偿参数向量来修改至少一个状态扩展向量的信号特征量，以形成预失真信号。 发射机包括用于从传输链的输出信号形成反馈信号的第二形成装置。 发射机包括用于适配至少一个时域补偿参数向量的适配器，用于基于发射信号和反馈信号之间的残余误差来适配至少一个频域补偿参数矢量。