Method, apparatus, and system for transmitting and receiving information of an uncoded channel in an orthogonal frequency division multiplexing system
    7.
    发明授权
    Method, apparatus, and system for transmitting and receiving information of an uncoded channel in an orthogonal frequency division multiplexing system 有权
    用于在正交频分复用系统中发送和接收未编码信道的信息的方法,装置和系统

    公开(公告)号:US09413510B2

    公开(公告)日:2016-08-09

    申请号:US14011314

    申请日:2013-08-27

    IPC分类号: H04L5/00 H04J13/00 H04L1/00

    摘要: A method apparatus and system for efficiently transmitting and receiving channels are provided in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM). A multiplexing scheme differs according to a channel when a transmitter transmits a packet data channel, a common control channel and a control channel designated for a particular user. Uncoded 1-bit information is broadly dispersed in frequency and time domains using multiplexing technology for maximizing diversity gain in a channel for transmitting information of at least one bit to a particular user like an acknowledgement (ACK) channel. The transmitter converts a sequence obtained by multiplexing multiple bits to be transmitted to a plurality of users to parallel signals, and broadly disperses the parallel signals in the time and frequency domains. When the uncoded 1-bit information is transmitted, reception reliability is improved because channel coding and transmission are efficiently performed using a small amount of resources.

    摘要翻译: 在基于正交频分复用(OFDM)的无线通信系统中提供有效发送和接收信道的方法装置和系统。 当发射机发送分组数据信道,公共控制信道和为特定用户指定的控制信道时,复用方案根据信道而不同。 使用多路复用技术将未编码的1比特信息广泛地分散在频域和时域中,用于使通道中的分集增益最大化,以将诸如确认(ACK)信道的至少一个比特的信息发送给特定用户。 发送器将通过将要发送的多个比特复用到多个用户获得的序列转换为并行信号,并且在时域和频域中广泛地分散并行信号。 当发送未编码的1比特信息时,由于使用少量资源有效地进行信道编码和发送,所以提高了接收可靠性。

    Apparatus and method for reducing PAPR of preamble signal in digital broadcasting system
    8.
    发明授权
    Apparatus and method for reducing PAPR of preamble signal in digital broadcasting system 有权
    数字广播系统中降低前置码信号PAPR的装置及方法

    公开(公告)号:US09407488B2

    公开(公告)日:2016-08-02

    申请号:US14315725

    申请日:2014-06-26

    IPC分类号: H04Q11/02 H04L27/26

    CPC分类号: H04L27/2633 H04L27/2618

    摘要: Methods and apparatuses are provided for reducing a Peak to Average Power Ratio (PAPR) in a digital broadcasting system. Reserved tones are determined in previously determined locations of sub-carriers that do not collide with a pilot signal of a preamble in a frame. A signal is transmitted through the reserved tones in a period for which the preamble is transmitted. If a Fast Fourier Transform (FFT) size is 8K, locations of the reserved tones are determined in accordance with a specified chart.

    摘要翻译: 提供了用于降低数字广播系统中的峰均功率比(PAPR)的方法和装置。 在与帧中的前导码的导频信号不冲突的子载波的先前确定的位置中确定保留音调。 在发送前同步码的时段内通过保留的音调发送信号。 如果快速傅里叶变换(FFT)大小为8K,则保留音调的位置根据指定的图表确定。