公开(公告)号：EP0885510A4

公开(公告)日：2003-02-05

申请号：EP97901934

申请日：1997-01-15

Applicant: MOTOROLA INC

Inventor： LUREY DANIEL M ,  LUZ YUDA Y ,  RADER SHEILA M ,  ROTTINGHAUS ALAN P

IPC: H03D7/00 ,  H01Q1/24 ,  H01Q3/26 ,  H03B28/00 ,  H03C1/00 ,  H03C3/00 ,  H03D7/16 ,  H04B1/04 ,  H04B1/16 ,  H04B1/26 ,  H04B1/28 ,  H04B1/38 ,  H04B1/40 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/185 ,  H04B7/24 ,  H04B7/26 ,  H04L1/06 ,  H04L1/22 ,  H04L27/20 ,  H04W4/18 ,  H04W88/06 ,  H04L25/08

CPC classification number: H01Q1/246 ,  H01Q3/2605 ,  H03B28/00 ,  H03C1/00 ,  H03C3/00 ,  H03D7/165 ,  H04B1/0003 ,  H04B1/001 ,  H04B1/0017 ,  H04B1/0021 ,  H04B1/0483 ,  H04B1/16 ,  H04B1/26 ,  H04B1/28 ,  H04B1/38 ,  H04B1/40 ,  H04B7/04 ,  H04B7/06 ,  H04B7/0691 ,  H04B7/0802 ,  H04B7/0874 ,  H04B7/18515 ,  H04B7/24 ,  H04L1/06 ,  H04L1/22 ,  H04W4/18 ,  H04W88/06

Abstract: An apparatus and a method for routing digitized radio frequency (RF) signals (140-143) to a plurality of paths are described herein. In accordance with a first preferred embodiment, the apparatus includes a digital converter/modulator (DUC) (125 or 129) coupled to a scaling and switching network (100N) which includes, at least, a first, second, third and fourth digital switch, and a first, second and third adder. Within the scaling and switching network, the first digital switch is responsive to the DUC. The first adder is responsive to the first and second digital switches, while the second adder is responsive to the third and fourth digital switches. Finally, the third adder is responsive to the first and second adders.

公开(公告)号：EP1169750A4

公开(公告)日：2004-12-08

申请号：EP00980378

申请日：2000-11-14

Applicant: MOTOROLA INC

Inventor： NEUMILLER PHILLIP D ,  LUZ YUDA Y ,  LUNDBY WALTER F ,  REICH PAUL W

IPC: H04B7/06 ,  H04B7/10 ,  H01Q21/24

CPC classification number: H04B7/10 ,  H04B7/0619

Abstract: A dynamically controlled polarization diversity system and method (100) for wireless communications comprises a transmitter, such as a base station (102), for transmitting signals with an adaptively controlled polarization state to a receiver, such as a mobile station (104). The polarization state may be adaptively varied by rotating a polarization angle, of the transmit signals. In one version, the polarization angle may be substantially continuously rotated from approximately 180 degrees to approximately 0 degrees in predetermined intervals. As the transmitter transmits signals with a varying polarization state, the receiver analyses the received transmit signals at the various states. The receiver may, for example, detect the received signal strength (RSSI) at each of the polarization states. The receiver then transmits a reply signal to the transmitter indicating the relative RSSI for each of the polarization states. The transmitter thereafter transmits at the polarization state which has the highest RSSI.

公开(公告)号：WO2009002741A3

公开(公告)日：2009-02-26

申请号：PCT/US2008067068

申请日：2008-06-16

Applicant: MOTOROLA INC ,  KUMAR PRACHI P ,  LUZ YUDA Y ,  MARSAN MARK J

Inventor： KUMAR PRACHI P ,  LUZ YUDA Y ,  MARSAN MARK J

IPC: H04L1/18 ,  H04L1/08

CPC classification number: H04L1/189 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/08 ,  H04L1/1812

Abstract: A method, information processing system, and wireless communication system schedules transmission of data packets in a wireless communication network. At least one selected data packet to be retransmitted to at least one respective receiver (108) is identified. At least one respective selected data packet is scheduled for retransmission (620) in a set of available transmission slots to at least one respective receiver (108). The scheduling is performed prior to determining a failure of a previous communication of the selected data packet and in response to the identifying.

Abstract translation: 方法，信息处理系统和无线通信系统调度无线通信网络中的数据分组的传输。 识别要发送至少一个相应接收器（108）的至少一个选择的数据分组。 至少一个相应的选择的数据分组被调度用于在至少一个相应的接收机（108）的一组可用传输时隙中重传（620）。 在确定所选择的数据分组的先前通信的故障之前以及响应于识别来执行调度。

公开(公告)号：WO2006036533A3

公开(公告)日：2006-08-17

申请号：PCT/US2005032541

申请日：2005-09-12

Applicant: MOTOROLA INC ,  LUZ YUDA Y ,  CROCKER RONALD T ,  HARRIS JOHN M

Inventor： LUZ YUDA Y ,  CROCKER RONALD T ,  HARRIS JOHN M

IPC: H04B1/69

CPC classification number: H04L5/0007 ,  H04K1/006 ,  H04L5/0044 ,  H04L27/2626 ,  H04L27/2647

Abstract: A communication device (202) converts a bit stream to multiple symbols and provides encryption at a physical layer by shifting a phase of each symbol of the multiple symbols to produce multiple encrypted symbols. Each encrypted symbol of the multiple encrypted symbols is modulated with an orthogonal (214) subcarrier to produce at least one modulated subcarrier and the at least one modulated subcarrier is then transmitted (278) via a wireless link. On a receive side (260), a receiving (260) communication device (250) receives the transmitted (230), encrypted symbols and provides decryption at a physical layer by shifting a phase of each encrypted symbol in correspondence with the phase (234) used to encrypt the symbol at the transmit side.

Abstract translation: 通信设备（202）将比特流转换为多个符号，并通过移位多个符号的每个符号的相位来产生多个加密符号，从而在物理层提供加密。 多个加密符号的每个加密符号用正交（214）子载波进行调制，以产生至少一个已调制子载波，然后经由无线链路发送至少一个已调制子载波（278）。 在接收侧（260），接收（260）通信设备（250）接收所发送的（230）加密符号，并且通过根据相位（234）移位每个加密符号的相位来在物理层提供解密， 用于加密发送端的符号。