-
1.发明授权METHODS AND APPARATUS FOR REDUCING DISCRETE POWER SPECTRAL DENSITY COMPONENTS OF SIGNALS TRANSMITTED IN WIDEBAND COMMUNICATION SYSTEMS 有权方法和设备减少宽带通信系统的离散LEISTUNGSSPEKTRALDICHTEKOMPONENTEN发射信号
公开(公告)号：EP1599981B1
公开(公告)日：2008-05-28
申请号：EP04716862.0
申请日：2004-03-03
CPC分类号： H04J13/00 , H03K3/84 , H04B1/707 , H04B1/71632 , H04B1/719 , H04B2201/70706 , H04J13/10 , H04J13/102 , H04L25/03866
摘要： Methods and apparatus for reducing discrete power spectral density (PSD) components of wideband signals transmitting blocks of data are disclosed. Discrete components are reduced by acquiring N symbols of pseudo-random data, each symbol having K bits; selecting one bit from each of the acquired symbols to generate N selected bits; selectively inverting a respective element in one of the data blocks responsive to the selected bits; acquiring one or more bits of pseudo-random data to replace a corresponding one or more respective bits of the acquired N symbols of pseudo-random data; and repeating for successive blocks of data.
-
公开(公告)号：EP1925130A1
公开(公告)日：2008-05-28
申请号：EP06740189.3
申请日：2006-03-30
IPC分类号： H04L12/56
摘要： A method for synchronizing communications between first and second piconets is provided. It is determined whether superframes corresponding to the first and second piconets are synchronized according to respective beacon period start times from the detected beacons. When the superframes are not synchronized, a type of overlap is determined. The type of overlap includes 1) an overlap between beacon periods, 2) an overlap between reservation periods and 3) an overlap between beacon periods and reservation periods of the superframes. The first and second piconets are merged into a single piconet according to rules based on the determined type of overlap.
-
3.发明公开METHOD AND APPARATUS FOR REDUCING DISCRETE POWER SPECTRAL DENSITY COMPONENTS IN A MULTIBAND WIDEBAND COMMUNICATION SYSTEM 审中-公开方法和装置降低密度的功率谱的多频段宽带通信系统的分立元件
公开(公告)号：EP1606915A1
公开(公告)日：2005-12-21
申请号：EP04750882.5
申请日：2004-04-30
CPC分类号： H04B1/71632 , H04B1/719 , H04L27/0004
摘要： Methods and apparatus for processing data for transmission that reduces discrete power spectral density (PSD) components of a transmitted multi-band wideband signal including the processed data are disclosed. Each band of the multi band wideband signal includes waveforms corresponding to a different band of frequencies. Data is processed for transmission by selectively inverting the data, defining a sequence for modulating the bands of the multi-band wideband signal with the data, and modulating the data onto the waveforms within the bands of the multiband wideband signal in accordance with the defined sequence.
-
4.发明公开METHODS AND APPARATUS FOR GENERATING AND PROCESSING WIDEBAND SIGNALS HAVING REDUCED DISCRETE POWER SPECTRAL DENSITY COMPONENTS 审中-公开方法和装置与减少的离散LEISTUNGSSPEKTRALDICHTEKOMPONENTEN发生和处理对宽带信号
公开(公告)号：EP1730914A1
公开(公告)日：2006-12-13
申请号：EP05731565.7
申请日：2005-03-29
CPC分类号： H04L25/03866 , H04B1/7163 , H04B1/717 , H04B1/7176 , H04J11/003 , H04J13/0022 , H04L5/0007 , H04L5/0044
摘要： Methods and apparatus for generating and processing wideband signals having reduced discrete power spectral density (PSD) components are disclosed. A wideband signal having reduced discrete PSD components is achieved by generating data symbols responsive to data for transmission, transforming one or more of the data symbols into a frame including one or more orthogonal frequency division multiplexing (OFDM) symbols, selectively inverting the frame responsive to a pseudo-random data sequence, and modulating wideband signal pulses of the wideband signal with the selectively inverted frame.
-
5.发明公开METHODS AND APPARATUS FOR REDUCING DISCRETE POWER SPECTRAL DENSITY COMPONENTS OF SIGNALS TRANSMITTED IN WIDEBAND COMMUNICATION SYSTEMS 有权方法和设备减少宽带通信系统的离散LEISTUNGSSPEKTRALDICHTEKOMPONENTEN发射信号
公开(公告)号：EP1599981A2
公开(公告)日：2005-11-30
申请号：EP04716862.0
申请日：2004-03-03
CPC分类号： H04J13/00 , H03K3/84 , H04B1/707 , H04B1/71632 , H04B1/719 , H04B2201/70706 , H04J13/10 , H04J13/102 , H04L25/03866
摘要： Methods and apparatus for reducing discrete power spectral density (PSD) components of wideband signals transmitting blocks of data are disclosed. Discrete components are reduced by acquiring N symbols of pseudo-random data, each symbol having K bits; selecting one bit from each of the acquired symbols to generate N selected bits; selectively inverting a respective element in one of the data blocks responsive to the selected bits; acquiring one or more bits of pseudo-random data to replace a corresponding one or more respective bits of the acquired N symbols of pseudo-random data; and repeating for successive blocks of data.
-
6.发明公开USING MULTIPLE RECEIVE ANTENNAS TO DETERMINE THE LOCATION OF A TRANSMITTER WITH RESPECT TO A RECEIVER IN ULTRA WIDEBAND SYSTEMS 审中-公开使用多个接收天线，用于确定地方站与任何EMPFûNGER连接在超宽带系统
公开(公告)号：EP1573353A2
公开(公告)日：2005-09-14
申请号：EP03814111.5
申请日：2003-12-16
CPC分类号： G01S5/12 , G01S3/50 , G01S5/0221 , G01S5/06 , G01S2205/008 , H04W64/00
摘要： An apparatus, system, method, and computer program product for determining a location of at least an image of a transmitter transmitting a signal is disclosed. The location of at least the image of the transmitter is determined by receiving a signal transmitted by the transmitter at at least three receiver antennas separated by known distances. Differences in time are then determined between receipt of the signal at one of the receiver antennas and at least two other receiver antennas. The known distances and the determined differences in receipt times are then processed to determine the location of the transmitter.
-
7.发明公开SELECTIVE DATA INVERSION IN ULTRA-WIDE-BAND COMMUNICATIONS T ELIMINATE LINE FREQUENCIES 有权在超宽带通信的选择性数据反演处置线频率的
公开(公告)号：EP1568148A2
公开(公告)日：2005-08-31
申请号：EP03815849.9
申请日：2003-12-01
IPC分类号： H04B1/69
CPC分类号： H04B1/71632 , H04B1/7183 , H04B1/719
摘要： A method for generating an ultra-wide-band (UWB) having a reduced discrete frequency component defines frame synchronization signal and an inverted frame synchronization signal. As each frame is generated, the method randomly selects the frame synchronization signal or the inverted frame synchronization signal to be included with the frame. The frame synchronization signal is detected by a correlator and the magnitude of the correlation is used to indicate the detection of the frame synchronization signal.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.011 秒)
