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    • 2. 发明申请
    • FACILITATING NOISE ESTIMATION IN WIRELESS COMMUNICATION
    • 促进无线通信中的噪声估计
    • US20110188466A1
    • 2011-08-04
    • US12834554
    • 2010-07-12
    • Xiaoxia ZhangDarshan JetlyHao XuRobert J. Fuchs
    • Xiaoxia ZhangDarshan JetlyHao XuRobert J. Fuchs
    • H04W72/04
    • H04W24/00H04J13/0062H04L5/0007H04L25/0206H04L25/0228H04W24/10H04W28/04H04W72/00H04W74/0833
    • Providing for noise estimation in wireless communication, and particularly for access request signals transmitted by a user equipment (UE), is described herein. By way of example, a wireless signal receiver can employ unused signal dimensions of a wireless network for noise estimation. In addition, the unused signal dimensions can be selected for time-frequency resources that are associated with a particular wireless channel, in order to obtain a noise estimate for that channel. By employing unused signal dimensions, a noise measurement is likely to include no other signal transmissions, and provide an accurate estimate of noise on that channel. According to various aspects of the subject disclosure, one or more Chu sequences employed for signal transmissions, root sequences thereof, or one or more cyclic shifts of a root sequence can be employed for the unused signal dimension.
    • 在这里描述了在无线通信中,特别是用于由用户设备(UE)发送的接入请求信号的噪声估计。 作为示例,无线信号接收机可以采用无线网络的未使用的信号维度进行噪声估计。 此外,可以为与特定无线信道相关联的时间 - 频率资源选择未使用的信号维度,以便获得该信道的噪声估计。 通过采用未使用的信号尺寸,噪声测量可能不包括其他信号传输,并且提供该信道上的噪声的精确估计。 根据本发明的各个方面,可以对未使用的信号维度采用用于信号传输,根系序列或根序列的一个或多个循环移位的一个或多个Chu序列。
    • 5. 发明授权
    • Efficient zadoff-chu sequence generation
    • 高效的zadoff-chu序列生成
    • US08374072B2
    • 2013-02-12
    • US12755998
    • 2010-04-07
    • Peter GaalRobert J. FuchsYongbin WeiKe LiuHanfang PanDurga Prasad MalladiDaniel T. Macek
    • Peter GaalRobert J. FuchsYongbin WeiKe LiuHanfang PanDurga Prasad MalladiDaniel T. Macek
    • H04J11/00H04W4/00
    • H04J13/0059H04J13/14
    • Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete Fourier Transform (DFT) with a reference signal generator that produces both a Zadoff-Chu sequence and its DFT. In the wireless communication system (e.g., Long Term Evolution (LTE) system), Chu sequences are extensively used, especially in the uplink (UL). Because of the single carrier operating mode, transmitting a Chu sequence in principle involves a succession of generating that sequence, performing a DFT operation and then an IFFT operation. Assuming that the sequence length is N, the initial sequence generation requires 2N multiplications and the DFT requires more than N log 2(N) multiplications. Given the frequent processing of Chu sequences, this would represent a complexity burden. The invention makes it possible to perform the sequence generation and DFT steps without any multiplication operation, except for possibly calculating certain initial parameters.
    • 用于Zadoff-Chu(Chu)序列生成的高效装置和方法避免了常规二次生成公式的附加处理和硬件复杂性,随后是具有产生Zadoff-Chu序列及其DFT的参考信号发生器的离散傅里叶变换(DFT)。 在无线通信系统(例如,长期演进(Long Term Evolution,LTE)系统)中,尤其在上行链路(UL)中广泛使用了Chu序列。 由于单载波操作模式,原则上发送Chu序列涉及一系列生成该序列,执行DFT操作,然后进行IFFT操作。 假设序列长度为N,则初始序列生成需要2N次乘法,并且DFT需要多于N个log 2(N)乘法。 鉴于Chu序列的频繁处理,这将代表一个复杂的负担。 除了可能计算某些初始参数之外,本发明使得可以执行没有任何乘法运算的序列生成和DFT步骤。
    • 7. 发明申请
    • EFFICIENT ZADOFF-CHU SEQUENCE GENERATION
    • 有效的ZADOFF-CHU序列生成
    • US20110249548A1
    • 2011-10-13
    • US12755998
    • 2010-04-07
    • Peter GaalRobert J. FuchsYongbin WeiKe LiuHanfang PanDurga Prasad MalladiDaniel T. Macek
    • Peter GaalRobert J. FuchsYongbin WeiKe LiuHanfang PanDurga Prasad MalladiDaniel T. Macek
    • H04J11/00H04L27/28
    • H04J13/0059H04J13/14
    • Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete Fourier Transform (DFT) with a reference signal generator that produces both a Zadoff-Chu sequence and its DFT. In the wireless communication system (e.g., Long Term Evolution (LTE) system), Chu sequences are extensively used, especially in the uplink (UL). Because of the single carrier operating mode, transmitting a Chu sequence in principle involves a succession of generating that sequence, performing a DFT operation and then an IFFT operation. Assuming that the sequence length is N, the initial sequence generation requires 2N multiplications and the DFT requires more than N log 2(N) multiplications. Given the frequent processing of Chu sequences, this would represent a complexity burden. The invention makes it possible to perform the sequence generation and DFT steps without any multiplication operation, except for possibly calculating certain initial parameters.
    • 用于Zadoff-Chu(“Chu”)序列生成的高效装置和方法避免了传统二次生成公式的附加处理和硬件复杂性,随后是具有产生Zadoff-Chu序列及其DFT的参考信号发生器的离散傅里叶变换(DFT) 。 在无线通信系统(例如,长期演进(Long Term Evolution,LTE)系统)中,尤其在上行链路(UL)中广泛使用了Chu序列。 由于单载波操作模式,原则上发送Chu序列涉及一系列生成该序列,执行DFT操作,然后进行IFFT操作。 假设序列长度为N,则初始序列生成需要2N次乘法,并且DFT需要多于N个log 2(N)乘法。 鉴于Chu序列的频繁处理,这将代表一个复杂的负担。 除了可能计算某些初始参数之外,本发明使得可以执行没有任何乘法运算的序列生成和DFT步骤。