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    Apparatus and method for transmitting/receiving pilot code pattern for identification of base station in communication system using orthogonal frequency division multiplexing scheme
    4.
    发明申请
    Apparatus and method for transmitting/receiving pilot code pattern for identification of base station in communication system using orthogonal frequency division multiplexing scheme 有权
    用于使用正交频分复用方案在通信系统中发送/接收用于识别基站的导频码模式的装置和方法

    公开(公告)号：US20050226141A1

    公开(公告)日：2005-10-13

    申请号：US11101847

    申请日：2005-04-08

    申请人： Jung-Min Ro ,  Seok-Hyun Yoon ,  Young-Kwon Cho ,  Seung-Hoon Choi ,  Chang-Ho Suh ,  Su-Ryong Jeong

    发明人： Jung-Min Ro ,  Seok-Hyun Yoon ,  Young-Kwon Cho ,  Seung-Hoon Choi ,  Chang-Ho Suh ,  Su-Ryong Jeong

    IPC分类号： H04J11/00 ,  H04J13/00 ,  H04L27/26

    CPC分类号： H04L5/0048 ,  H04B1/69 ,  H04J13/00 ,  H04J13/0074 ,  H04J13/16 ,  H04L5/0016 ,  H04L25/0226 ,  H04L25/03866 ,  H04L27/2613

    摘要： Provided are an apparatus and method for transmitting/receiving a pilot code pattern used to identify a base station. In the base station, a pilot code pattern determiner determines a code set that includes a number of spreading codes based on a specific ID of the base station. A first spreader spreads a pilot symbol mapped onto an FC with a corresponding spreading code according to the determined code set, and controls gain so as to transmit the pilot symbol at a higher signal level than data. A second spreader spreads data symbols mapped onto the FC with spreading codes of the code set except for the spreading code used for the pilot spreading. A mapper groups a spread signal from the first spreader and spread signals from the second spreader on a TFC basis, and outputs signals that constitute each TFC to points of sub-carriers. An IFFT unit performs an IFFT operation on signals output from the mapper. Because the pilot as well as the data is spread, it is easy to implement the base station. Also, it is possible to identify base stations according to the pilot spreading codes as well as a pilot hopping pattern.

    摘要翻译： 提供了一种用于发送/接收用于识别基站的导频码模式的装置和方法。 在基站中，导频码模式确定器基于基站的特定ID确定包括多个扩展码的码集。 第一扩展器根据确定的代码集，将具有相应扩展码的映射到FC的导频符号扩展，并且控制增益以便以比数据更高的信号电平发送导频符号。 第二扩展器将除了用于导频扩展的扩展码之外的码集的扩展码扩展到映射到FC的数据符号。 映射器将来自第一扩展器的扩展信号和基于TFC的第二扩展器的扩展信号分组，并将构成每个TFC的信号输出到子载波的点。 IFFT单元对从映射器输出的信号执行IFFT操作。 由于飞行员以及数据的传播，基站很容易实现。 此外，可以根据导频扩展码以及导频跳频模式来识别基站。

    Apparatus and method for transmitting/receiving pilot code pattern for identification of base station in communication system using orthogonal frequency division multiplexing scheme
    5.
    发明授权
    Apparatus and method for transmitting/receiving pilot code pattern for identification of base station in communication system using orthogonal frequency division multiplexing scheme 有权
    用于使用正交频分复用方案在通信系统中发送/接收用于识别基站的导频码模式的装置和方法

    公开(公告)号：US07751304B2

    公开(公告)日：2010-07-06

    申请号：US11101847

    申请日：2005-04-08

    申请人： Jung-Min Ro ,  Seok-Hyun Yoon ,  Young-Kwon Cho ,  Seung-Hoon Choi ,  Chang-Ho Suh ,  Su-Ryong Jeong

    发明人： Jung-Min Ro ,  Seok-Hyun Yoon ,  Young-Kwon Cho ,  Seung-Hoon Choi ,  Chang-Ho Suh ,  Su-Ryong Jeong

    IPC分类号： H04J11/00 ,  H04W72/00

    CPC分类号： H04L5/0048 ,  H04B1/69 ,  H04J13/00 ,  H04J13/0074 ,  H04J13/16 ,  H04L5/0016 ,  H04L25/0226 ,  H04L25/03866 ,  H04L27/2613

    摘要： Provided are an apparatus and method for transmitting/receiving a pilot code pattern used to identify a base station. In the base station, a pilot code pattern determiner determines a code set that includes a number of spreading codes based on a specific ID of the base station. A first spreader spreads a pilot symbol mapped onto an FC with a corresponding spreading code according to the determined code set, and controls gain so as to transmit the pilot symbol at a higher signal level than data. A second spreader spreads data symbols mapped onto the FC with spreading codes of the code set except for the spreading code used for the pilot spreading. A mapper groups a spread signal from the first spreader and spread signals from the second spreader on a TFC basis, and outputs signals that constitute each TFC to points of sub-carriers. An IFFT unit performs an IFFT operation on signals output from the mapper. Because the pilot as well as the data is spread, it is easy to implement the base station. Also, it is possible to identify base stations according to the pilot spreading codes as well as a pilot hopping pattern.

    摘要翻译： 提供了一种用于发送/接收用于识别基站的导频码模式的装置和方法。 在基站中，导频码模式确定器基于基站的特定ID确定包括多个扩展码的码集。 第一扩展器根据确定的代码集，将具有相应扩展码的映射到FC的导频符号扩展，并且控制增益以便以比数据更高的信号电平发送导频符号。 第二扩展器将除了用于导频扩展的扩展码之外的码集的扩展码扩展到映射到FC的数据符号。 映射器将来自第一扩展器的扩展信号和基于TFC的第二扩展器的扩展信号分组，并将构成每个TFC的信号输出到子载波的点。 IFFT单元对从映射器输出的信号执行IFFT操作。 由于飞行员以及数据的传播，基站很容易实现。 此外，可以根据导频扩展码以及导频跳频模式来识别基站。

    Apparatus and method for switching between an AMC mode and a diversity mode in a broadband wireless communication system
    6.
    发明授权
    Apparatus and method for switching between an AMC mode and a diversity mode in a broadband wireless communication system 有权
    用于在宽带无线通信系统中在AMC模式和分集模式之间切换的装置和方法

    公开(公告)号：US07526035B2

    公开(公告)日：2009-04-28

    申请号：US11098679

    申请日：2005-04-04

    申请人： Chang-Ho Suh ,  Young-Kwon Cho ,  Su-Ryong Jeong ,  Seok-Hyun Yoon

    发明人： Chang-Ho Suh ,  Young-Kwon Cho ,  Su-Ryong Jeong ,  Seok-Hyun Yoon

    IPC分类号： H04K1/10

    CPC分类号： H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/02 ,  H04L25/02

    摘要： An apparatus and method for switching between an AMC mode and a diversity mode adaptively according to a channel environment in a broadband wireless communication system are provided. According to the present invention, a transmitter (a base station) determines a transmission mode according to frequency-domain and time-domain channel measurement information received from a receiver (a mobile station). If the transmission mode is the AMC mode, the transmitter selects a coding and modulation scheme according to a frequency-domain CQI received from the receiver. If the transmission mode is a diversity mode, the transmitter selects a predetermined coding and modulation scheme.

    摘要翻译： 提供了一种根据宽带无线通信系统中的信道环境自适应地切换AMC模式和分集模式的装置和方法。 根据本发明，发射机（基站）根据从接收机（移动台）接收的频域和时域信道测量信息确定传输模式。 如果传输模式是AMC模式，则发射机根据从接收机接收的频域CQI来选择编码和调制方案。 如果传输模式是分集模式，则发射机选择预定的编码和调制方案。

    Apparatus and method for performance improvement of channel estimation in broadband wireless access communication system
    9.
    发明申请
    Apparatus and method for performance improvement of channel estimation in broadband wireless access communication system 审中-公开
    宽带无线接入通信系统信道估计性能改善的装置及方法

    公开(公告)号：US20060251037A1

    公开(公告)日：2006-11-09

    申请号：US11374731

    申请日：2006-03-14

    申请人： Jin-Kyu Koo ,  Seok-Hyun Yoon ,  Su-Ryong Jeong ,  Dong-Seek Park ,  Young-Kwon Cho ,  Sung-Kwon Hong

    发明人： Jin-Kyu Koo ,  Seok-Hyun Yoon ,  Su-Ryong Jeong ,  Dong-Seek Park ,  Young-Kwon Cho ,  Sung-Kwon Hong

    IPC分类号： H04B7/216

    CPC分类号： H04B7/2621

    摘要： Disclosed are a pilot tone generation apparatus and a pilot tone generation method for improving channel estimation performance in an OFDMA/CDM communication system. In a pilot tone generation method for channel estimation in a broadband wireless access communication system, if given data symbols and a pilot symbol are input, the input data symbols are code-division multiplexed. A pilot symbol value for generating a sub-carrier of a specific position into the pilot tone is produced and spread, correspondingly to a code-division multiplexed result value of the data symbols Also, a spreading value for the pilot symbol value and the resulting code-division multiplexed value of the data symbols are added up, and the pilot tone is generated at a given position on a frequency axis, which position is predetermined through a result of the adding up.

    摘要翻译： 公开了一种用于改善OFDMA / CDM通信系统中的信道估计性能的导频音产生装置和导频音产生方法。 在宽带无线接入通信系统中用于信道估计的导频音生成方法中，如果输入给定数据符号和导频符号，则输入数据符号被码分多路复用。 对应于数据符号的码分多路复用结果值，产生并扩展用于产生特定位置的导频音的子载波的导频符号值。另外，导频符号值的扩展值和结果代码 将数据符号的分解复用值相加，并且在频率轴上的给定位置处生成导频​​音，该位置通过相加的结果被预先确定。

    Apparatus and method for transmitting/receiving uplink random access channel in mobile communication system
    10.
    发明申请
    Apparatus and method for transmitting/receiving uplink random access channel in mobile communication system 审中-公开
    用于在移动通信系统中发送/接收上行随机接入信道的装置和方法

    公开(公告)号：US20050286409A1

    公开(公告)日：2005-12-29

    申请号：US11165974

    申请日：2005-06-24

    申请人： Seok-Hyun Yoon ,  Jung-Min Ro ,  Jin-Kyu Koo ,  Su-Ryong Jeong ,  Dong-Seek Park ,  Young-Kwon Cho

    发明人： Seok-Hyun Yoon ,  Jung-Min Ro ,  Jin-Kyu Koo ,  Su-Ryong Jeong ,  Dong-Seek Park ,  Young-Kwon Cho

    IPC分类号： H04J11/00 ,  H04L5/02

    CPC分类号： H04L5/023

    摘要： An apparatus and method for transmitting/receiving an random access channel (RACH) signal in a broadband wireless communication system where a total uplink frequency band is divided into M sub-bands are provided. In the RACH transmitting apparatus, a generator generates an access code. A sub-carrier allocator divides the access code into M sub-blocks and allocates each of the M sub-blocks to successive sub-carriers in a sub-band. An inverse fast Fourier transform (IFFT) processor generates an orthogonal frequency division multiplexing (OFDM) symbol by performing an IFFT on the allocated sub-blocks.

    摘要翻译： 提供了一种用于在将总上行链路频带划分为M个子带的宽带无线通信系统中发送/接收随机接入信道（RACH）信号的装置和方法。 在RACH发送装置中，发生器生成访问码。 子载波分配器将接入码分成M个子块，并将M个子块中的每一个分配给子带中的连续子载波。 逆快速傅里叶变换（IFFT）处理器通过对所分配的子块执行IFFT来产生正交频分复用（OFDM）符号。