Apparatus and method for interference cancellation in a broadband wireless communication system
    1.
    发明授权
    Apparatus and method for interference cancellation in a broadband wireless communication system 有权
    宽带无线通信系统中干扰消除的装置和方法

    公开(公告)号:US08149957B2

    公开(公告)日:2012-04-03

    申请号:US12061146

    申请日:2008-04-02

    IPC分类号: H04L27/06

    摘要: An apparatus and a method for interference cancellation in a broadband wireless communication system are provided. A receiving apparatus includes an estimator, a channel compensator, and a demodulator. The estimator estimates channels of a desired signal and at least one interference signal, estimates noise, calculates a mean interference power of each interference signal, and calculates a mean noise power. The channel compensator channel-compensates burst data. The demodulator calculates a noise variance value by adding the mean noise power to the at least one mean interference power and creates Log Likelihood Ratio (LLR) by demodulating the channel-compensated data.

    摘要翻译: 提供了一种用于宽带无线通信系统中的干扰消除的装置和方法。 接收装置包括估计器,信道补偿器和解调器。 估计器估计期望信号的信道和至少一个干扰信号,估计噪声,计算每个干扰信号的平均干扰功率,并且计算平均噪声功率。 通道补偿器通道补偿突发数据。 解调器通过将平均噪声功率加到至少一个平均干扰功率来计算噪声方差值,并通过解调信道补偿数据产生对数似然比(LLR)。

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING HARQ BURST
    2.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING HARQ BURST 有权
    用于发送和接收HARQ BURST的方法和装置

    公开(公告)号:US20120002619A1

    公开(公告)日:2012-01-05

    申请号:US13171855

    申请日:2011-06-29

    IPC分类号: H04W72/12

    摘要: A method and apparatus for transmitting and receiving a Hybrid Automatic Repeat reQuest (HARQ) burst in a communication system are provided. A transmitter obtains at least one Protocol Data Unit (PDU) according to a decoding order of a receiver which supports a HARQ mode. The receiver controls an order of at least one HARQ burst using burst information including a HARQ Channel IDentifier (ACID).

    摘要翻译: 提供了一种用于在通信系统中发送和接收混合自动重复请求(HARQ)突发的方法和装置。 发射机根据支持HARQ模式的接收机的解码顺序,获得至少一个协议数据单元(PDU)。 接收机使用包括HARQ信道标识符(ACID)的突发信息来控制至少一个HARQ突发的次序。

    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system
    6.
    发明授权
    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system 有权
    用于在正交频分多址系统中分配信道的方法和装置

    公开(公告)号:US07636571B2

    公开(公告)日:2009-12-22

    申请号:US11072181

    申请日:2005-03-04

    IPC分类号: H04W36/00 H04W72/00 H04W40/00

    摘要: A method for allocating a frequency to a subscriber station (SS) in handover operation in an Orthogonal Frequency Division Multiple Access (OFDMA) system. In the method, the SS checks safety channel frequencies for a target base station (BS), generates a safety channel frequency request message for requesting allocation of the checked safety channel frequencies, and transmits the safety channel frequency request message. Upon receiving the safety channel frequency request message from the SS, a serving BS allocates frequencies for a requested channel, and transmits an allocation message with the frequency allocation information to the SS. The serving BS transmits a channel allocation request message to the target BS according to the frequency allocation information. Upon receiving the channel allocation request message, the target BS allocates the safety channel frequencies to the SS.

    摘要翻译: 一种在正交频分多址(OFDMA)系统中在切换操作中向用户站(SS)分配频率的方法。 在该方法中,SS检查目标基站(BS)的安全信道频率,生成用于请求分配所检查的安全信道频率的安全信道频率请求消息,并发送安全信道频率请求消息。 在从SS接收到安全信道频率请求消息时,服务BS为所请求的信道分配频率,并向SS发送具有频率分配信息的分配消息。 服务BS根据频率分配信息向目标BS发送信道分配请求消息。 在接收到信道分配请求消息后,目标BS向SS分配安全信道频率。