Apparatus and method for transmitting/receiving uplink pilot in frequency division multiple access system
    1.
    发明授权
    Apparatus and method for transmitting/receiving uplink pilot in frequency division multiple access system 有权
    在频分多址系统中发送/接收上行导频的装置和方法

    公开(公告)号:US08325594B2

    公开(公告)日:2012-12-04

    申请号:US11917450

    申请日:2006-06-21

    IPC分类号: H04J11/00

    CPC分类号: H04L5/06 H04L25/0232

    摘要: Method and apparatus for transmitting/receiving an uplink pilot used for channel estimation and measurement of an uplink in an FDMA system. Pilot symbols are transmitted with different frequency mapping patterns in first and second pilot symbol intervals of one time slot interval including data symbol intervals and the inconsecutive first and second pilot symbol intervals which have a shorter length than the data symbol intervals. As a result, interpolation of a frequency domain during channel estimation is not necessary, and can correctly obtain channel-estimated values of a frequency at which data is transmitted, in a fast time-varying channel environment.

    摘要翻译: 用于发送/接收用于FDMA系统中的上行链路的信道估计和测量的上行链路导频的方法和装置。 在包括数据符号间隔的一个时隙间隔的第一和第二导频符号间隔以及具有比数据符号间隔更短的长度的不连续的第一和第二导频符号间隔中,以不同的频率映射模式发送导频符号。 结果,在频道估计期间的频域的插值不是必需的,并且可以在快速时变信道环境中正确地获得数据被发送的频率的信道估计值。

    APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING UPLINK PILOT IN FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM
    2.
    发明申请
    APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING UPLINK PILOT IN FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 有权
    频分多址接入系统发送/接收上行导频的装置及方法

    公开(公告)号:US20100149962A1

    公开(公告)日:2010-06-17

    申请号:US11917450

    申请日:2006-06-21

    IPC分类号: H04J11/00 H04B7/208

    CPC分类号: H04L5/06 H04L25/0232

    摘要: Method and apparatus for transmitting/receiving an uplink pilot used for channel estimation and measurement of an uplink in an FDMA system. Pilot symbols are transmitted with different frequency mapping patterns in first and second pilot symbol intervals of one time slot interval including data symbol intervals and the inconsecutive first and second pilot symbol intervals which have a shorter length than the data symbol intervals. As a result, interpolation of a frequency domain during channel estimation is not necessary, and can correctly obtain channel-estimated values of a frequency at which data is transmitted, in a fast time-varying channel environment.

    摘要翻译: 用于发送/接收用于FDMA系统中的上行链路的信道估计和测量的上行链路导频的方法和装置。 在包括数据符号间隔的一个时隙间隔的第一和第二导频符号间隔以及具有比数据符号间隔更短的长度的不连续的第一和第二导频符号间隔中,以不同的频率映射模式发送导频符号。 结果,在频道估计期间的频域的插值不是必需的,并且可以在快速时变信道环境中正确地获得数据被发送的频率的信道估计值。

    Method, apparatus, and system for transmitting and receiving information of an uncoded channel in an orthogonal frequency division multiplexing system
    4.
    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:US08520499B2

    公开(公告)日:2013-08-27

    申请号:US11417217

    申请日:2006-05-04

    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用于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。

    Method and apparatus for transmitting/receiving a signal in an FFH-OFDM communication system
    8.
    发明授权
    Method and apparatus for transmitting/receiving a signal in an FFH-OFDM communication system 有权
    用于在FFH-OFDM通信系统中发送/接收信号的方法和装置

    公开(公告)号:US08107356B2

    公开(公告)日:2012-01-31

    申请号:US11317239

    申请日:2005-12-27

    IPC分类号: H04J11/00

    摘要: Provided is an apparatus for signal transmission in a Fast Frequency Hopping-Orthogonal Frequency Division Multiplexing (FFH-OFDM) communication system which divides all of the available frequency bands into a plurality of sub-carrier bands and includes a plurality of sub-channels each including at least one sub-carrier band. The apparatus includes: a Fast Frequency Hopping (FFH) unit for allocating input data to a number of selected sub-carriers from among the plurality of sub-carriers and for performing fast frequency hopping in accordance with a fast frequency hopping pattern to generate FFH signals, wherein one or more pieces of data comprise the input data and each of the one or more pieces of data is allocated to one of the selected sub-carriers; a Fast Fourier Transform (FFT) unit for performing FFT on FFH signals; a controller for inserting null data into remaining sub-carriers, the remaining sub-carriers comprising sub-carriers other than the selected sub-carriers; a first Inverse Fast Fourier Transform (IFFT) unit for performing IFFT on both the selected sub-carriers comprising the input data and the remaining sub-carriers comprising the inserted null data to generate first IFFT signals; and a transmitter for transmitting the first IFFT signals.

    摘要翻译: 提供了一种在快速跳频 - 正交频分复用(FFH-OFDM)通信系统中用于信号传输的装置,其将所有可用频带划分成多个子载波频带,并且包括多个子信道,每个子信道包括 至少一个子载波频带。 该装置包括:快速跳频(FFH)单元,用于从多个子载波中分配输入数据到多个选择的子载波,并根据快速跳频模式执行快速跳频以产生FFH信号 其中一条或多条数据包括所述输入数据,并且所述一条或多条数据中的每条数据被分配给所选择的子载体之一; 用于对FFH信号执行FFT的快速傅里叶变换(FFT)单元; 用于将零数据插入剩余子载波的控制器,其余子载波包括除所选子载波之外的子载波; 第一逆快速傅里叶变换(IFFT)单元,用于对包括输入数据的所选择的子载波和包括插入的空数据的剩余子载波执行IFFT以产生第一IFFT信号; 以及用于发送第一IFFT信号的发射机。

    Adaptive data multiplexing method in OFDMA system and transmission/reception apparatus thereof
    9.
    发明授权
    Adaptive data multiplexing method in OFDMA system and transmission/reception apparatus thereof 有权
    OFDMA系统中的自适应数据复用方法及其发送/接收装置

    公开(公告)号:US08064327B2

    公开(公告)日:2011-11-22

    申请号:US11417218

    申请日:2006-05-04

    IPC分类号: H04J11/00

    摘要: A transmission/reception method and apparatus in an Orthogonal Frequency Division Multiplexing (OFDM)-based wireless communication system are provided, in which a data transmitter adaptively selects a multiplexing scheme according to a code rate of the transmission packet or an effective SNR of a wireless channel for a corresponding terminal, when transmitting a packet data channel. The adaptive multiplexing scheme is equal in concept to a scheme of adaptively implementing unitary precoding. The unitary precoded multiplexing includes Orthogonal Frequency code Domain Multiplexing (OFCDM), Fast Fourier Transform-Spread-OFDM (FFT-S-OFDM), Fast Frequency Hopping-OFDM (FFH-OFDM), and the like. The method and apparatus adaptively selects the multiplexing scheme and transmits/receives data using the selected multiplexing scheme, thereby improving reception performance of the packet data.

    摘要翻译: 提供了一种基于正交频分复用(OFDM)的无线通信系统中的发送/接收方法和装置,其中数据发射机根据传输分组的码率或无线的有效SNR自适应地选择复用方案 当发送分组数据信道时,对应的终端的信道。 自适应复用方案在概念上等于自适应地实现单一预编码的方案。 单一预编码复用包括正交频域域复用(OFCDM),快速傅里叶变换扩频OFDM(FFT-S-OFDM),快速跳频OFDM(FFH-OFDM)等。 该方法和装置自适应地选择复用方案,并使用选择的复用方案发送/接收数据,从而提高分组数据的接收性能。