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202 条记录 (耗时 0.014 秒)

    METHOD AND DEVICE OF GAIN EQUALIZATION BASED ON WIDEBAND MULTI-CARRIER BASE-STATION
    61.
    发明公开
    METHOD AND DEVICE OF GAIN EQUALIZATION BASED ON WIDEBAND MULTI-CARRIER BASE-STATION 有权
    基于宽带的更多支持基站的方法和装置增益均衡

    公开(公告)号：EP1339248A1

    公开(公告)日：2003-08-27

    申请号：EP01966981.1

    申请日：2001-05-21

    申请人： Huawei Technologies Co., Ltd.

    发明人： PENG, Qingquan ,  GUI, Yijun

    IPC分类号： H04Q7/30

    CPC分类号： H04L27/2637 ,  H04L27/367 ,  H04W52/10 ,  H04W52/367 ,  H04W52/42 ,  H04W52/52

    摘要： A method and apparatus of gain equalization based on a wide-band multi-carrier base station calculates or tests non-uniformity of a gain of an analog intermediate frequency and a radio frequency in advance and stores corresponding correction values in tables. In an initialization period before operating, the corresponding correction values are looked up from the tables based on the analog intermediate frequency and the radio frequency corresponding to each of the carriers to implement a specific correction in a multiplier of a digital up-converter before interpolation. Under a premise that hardware is not modified and specification is not degraded, the non-uniformity of the amplitude-frequency characteristic of the respective carriers in shared channels of a transmitter is equilibrated or corrected by changing a gain-adjust-coefficient of the respective carriers, thereby significantly improving the consistency of the gain of the respective carriers and reducing consumption of resources.

    摘要翻译： 基于宽带多载波基站增益均衡的方法和装置计算或试验的模拟中频的增益和预先并存储在表中的相应修正值的射频的非均匀性。 在操作之前的初始化期间，相应的校正值，从基于所述模拟中间频率和无线电频率对应于每个载波的以实现内插之前的数字上变频器的乘数特定校正的表查找。 下一个前提没有硬件不被修改和说明书中未劣化，在发射机中的共享信道的respectivement载波的幅频特性的不均匀性平衡或通过改变respectivement载波的增益调整系数校正 ，从而显着提高了respectivement载波的增益的一致性和减少资源的消耗。

    Multiplexing of multicarrier signals
    62.
    发明公开
    Multiplexing of multicarrier signals 审中-公开
    MultiplexierungMehrträgersignale

    公开(公告)号：EP1267513A2

    公开(公告)日：2002-12-18

    申请号：EP02012932.6

    申请日：2002-06-11

    申请人： Unique Broadband Systems, Inc.

    发明人： Korobkov, Dmitri ,  Howell, Randy ,  Dolgonos, Alex

    IPC分类号： H04L5/02 ,  H04L27/26

    CPC分类号： H04L5/0037 ,  H04L1/004 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0046 ,  H04L5/0048 ,  H04L27/2637 ,  H04L27/2653

    摘要： A transmitter and corresponding method for transmitting an OFDM signal in a communications channel, including a plurality of base-band OFDM modulators, each for modulating a respective data signal onto a plurality of orthogonal sub-carriers and outputting a respective sub-channel OFDM signal; and a fast convolution filter and up-converter for applying fast convolution filtering and digital up-conversion to the sub-channel OFDM signals to output a combined OFDM signal that includes each of the sub-channel OFDM signals, the fast convolution and up-converter filtering each of the sub-channel OFDM signals and frequency shifting all of the sub-channel signals to respective designated frequencies within the combined OFDM signal. A corresponding receiver is also provided.

    摘要翻译： 用于通过通信信道发送OFDM信号的发射机和相应方法包括多个基带OFDM调制器，每个调制器将相应的数据信号调制到多个正交子载波上，并输出相应的子信道OFDM信号 ; 并且对子信道OFDM信号应用快速卷积滤波和数字向上转换，以产生包括每个子信道OFDM信号的组合OFDM信号。 快速卷积和上转换器对每个子信道OFDM信号进行滤波，并将子信道信号的频率移位到组合的OFDM信号内的相应的指定频率。 还提供了相应的接收机。

    FEHER KEYING (FK) MODULATION AND TRANSCEIVERS INCLUDING CLOCK SHAPING PROCESSORS
    63.
    发明公开
    FEHER KEYING (FK) MODULATION AND TRANSCEIVERS INCLUDING CLOCK SHAPING PROCESSORS 审中-公开
    FEHER JUMP和调制发送器/接收时钟成型的处理器包括

    公开(公告)号：EP1110356A1

    公开(公告)日：2001-06-27

    申请号：EP99945351.7

    申请日：1999-08-30

    申请人： Feher, Kamilo

    发明人： Feher, Kamilo

    IPC分类号： H04L25/00 ,  H04L27/04 ,  H03K7/08 ,  H03K9/08

    CPC分类号： G06F1/04 ,  H04B2201/70703 ,  H04L7/0008 ,  H04L25/4902 ,  H04L27/00 ,  H04L27/0004 ,  H04L27/18 ,  H04L27/2637 ,  H04L27/34

    摘要： Ultra high spectral efficient Feher Keying (FK) Modulation and Demodulation (Modem), Baseband Processing (BBP), Intermediate Frequency (IF) and Radio Frequency (RF) signal generation and processing methods and implementations, including Clock Modulated (CM) and Shaped Clocked (SC) Transmitters-Receivers (Transceivers) are disclosed. In the FK modulator, specified clock converted and clock shaped signal parameters are generated. These are based on the input data signal patterns (1.1) and are generated by means of control signals (1.11), which are designed in the data input signal interface data signal and/or clock signal encoder units (1.8). The selectable clock signal parameters include symmetrical and non-symmetrical clock signals, shaped band-limited continuous clock signal patterns, shaped encoded clock signals, variable rise and fall time clock signals, clock signals having adjustable on and off duration, multilevel and shaped clock signals and asynchronous clock signal information transmission means, where asynchronous clocking (1.3, 1.4) is referenced to the incoming data source signals (1.1).

    Multicarrier transmission using differential phases
    67.
    发明公开
    Multicarrier transmission using differential phases 失效
    Mehrträgerübertragung手套差异

    公开(公告)号：EP0701345A2

    公开(公告)日：1996-03-13

    申请号：EP95306327.8

    申请日：1995-09-11

    申请人： SONY CORPORATION

    发明人： Suzuki, Mitsuhiro ,  Natori, Makoto

    IPC分类号： H04L5/06

    CPC分类号： H04L27/2653 ,  H04L27/2637

    摘要： A communication system can satisfactorily communicate with a mobile station by a transmitter and receiver of a simple arrangement. A plurality of carriers having different frequencies are transmitted simultaneously and data is transmitted on the basis of a phase difference between the carriers. Also, the carriers are multiplied with a predetermined time waveform and transmitted. A reception side receives data by use of a time waveform narrower than the above time waveform.

    摘要翻译： 通信系统可以通过简单的布置的发射机和接收机令人满意地与移动台进行通信。 同时发送具有不同频率的多个载波，并且基于载波之间的相位差来发送数据。 此外，载波被乘以预定的时间波形并被发送。 接收侧通过使用比上述时间波形窄的时间波形来接收数据。

    Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems
    69.
    发明公开
    Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems 失效
    一种用于在多载波RF Komunikationssystem降低峰均功率的方法和设备。

    公开(公告)号：EP0594358A2

    公开(公告)日：1994-04-27

    申请号：EP93308178.8

    申请日：1993-10-13

    申请人： AT&T Corp.

    发明人： Arntz, Bernard James ,  Nitz, William Allen ,  Ocenasek, Josef

    IPC分类号： H03G3/20 ,  H03F1/32

    CPC分类号： H03G3/3042 ,  H03F1/34 ,  H04L27/2621 ,  H04L27/2637

    摘要： Apparatus for controlling a system including a linear amplifier (109) processing a plurality of carrier signals (111-114) of a multi channel carrier system alters the phases (by 131-134) of one or more sources of the multi-channel signals in response to a detected peak envelope power (in 153) or of a peak to average power (in 152) ratio at regular scheduled intervals. This reduces the peak envelope power to average envelope power ratio and enables the reduction in the power rating required by the amplifiers handling the multi-channel signal.

    摘要翻译： 一种用于控制一个系统，它包括一个线性放大器（109）处理的载波信号的多信道载波系统青睐的多信道信号的一个或多个源的多个（111-114）的相位（由131-134） 响应于检测到的峰值包络功率（在153）或以规则的预定的时间间隔一个峰均功率（在152）比。 这降低峰值包络功率与平均功率之比和包络启用在由放大器处理多声道信号所需的额定功率的降低。