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    • 5. 发明授权
    • Apparatus and method for preamble pseudo noise code allocation in broadband wireless communication system
    • 宽带无线通信系统中前导码伪噪声码分配的装置及方法
    • US08189520B2
    • 2012-05-29
    • US12026064
    • 2008-02-05
    • Ki-Won SungSoo-Yeul Oh
    • Ki-Won SungSoo-Yeul Oh
    • H04W4/00
    • H04W8/26
    • An apparatus and a method for preamble pseudo noise code allocation in a broadband wireless communication system are provided. The method includes defining an inherent index for each FA, allocating a preamble PN index to base stations using a reference FA index, defining an inherent offset by each FA for remaining FA indexes, and shifting the preamble PN index allocated to the base stations using the reference FA index by the defined offset, and allocating the preamble PN index to base stations using the remaining FA indexes. The price of a system can thus be lowered by reducing a Peak-to-Average Power Ratio (PAPR) of a preamble, increase the number of FAs that a specific amplifier can amplify, and immediately allocate a preamble PN index when adding a new FA during an operation of a system.
    • 提供了一种在宽带无线通信系统中用于前导​​码伪噪声码分配的装置和方法。 该方法包括定义每个FA的固有索引,使用参考FA索引向基站分配前导码PN索引,为每个FA定义剩余FA索引的固有偏移量,以及使用分配给基站的前导码索引分配给基站 通过定义的偏移来参考FA索引,并且使用剩余的FA索引将前导码PN索引分配给基站。 因此,可以通过降低前同步码的峰均功率比(PAPR)来降低系统的价格,增加特定放大器可以放大的FA的数量,并且在添加新的FA时立即分配前导码PN索引 在系统的操作期间。
    • 9. 发明授权
    • Air interface simulator and method thereof
    • 空中接口模拟器及其方法
    • US06438357B1
    • 2002-08-20
    • US09324426
    • 1999-06-01
    • Soo-yeul OhKi-seong Jang
    • Soo-yeul OhKi-seong Jang
    • H04B1700
    • H04B17/0087H04W88/00H04W92/10Y02D70/122
    • An air interface simulator and simulation method is disclosed. The air interface simulator comprises a first plurality of variable attenuators for equally providing a mobile station with a transmission signal received from base transceiver station (BTS) before the air interface simulator starts driving, a plurality of attenuators for generating path loss to prevent power of the mobile station from being excessively input to said BTS and to construct an air environment, a first plurality of 2-way dividers for generating an input terminal for providing load in a reverse link of the BTS and combining the provided load and a RF signal of the mobile station, a plurality of duplexers for duplexing a transmission signal and a received signal of the BTS into a RF signal of the mobile station, a second plurality of variable attenuators for generating path loss and long-term effect, a first plurality of 4-way dividers for combing input signals from each BTS, a second plurality of 4-way dividers for combining input signals from each mobile station and a decoder circuit for controlling the first and second plurality of variable attenuators, the decoder circuit being provided with control input from a parallel port of a control computer.
    • 公开了一种空中接口模拟器和仿真方法。 空中接口模拟器包括第一多个可变衰减器,用于在空中接口模拟器开始驱动之前向移动站提供从基站收发器(BTS)接收的传输信号;多个衰减器,用于产生路径损耗以防止 移动台从过分输入到所述BTS并构建空中环境;第一多个2路分频器,用于产生用于在BTS的反向链路中提供负载的输入终端,并将提供的负载和所提供的负载的RF信号 移动站,用于将所述BTS的发送信号和所接收的信号双重化为所述移动台的RF信号的多个双工器,用于产生路径损耗和长期效应的第二多个可变衰减器,第一多个4- 用于组合来自每个BTS的输入信号的方式分配器,用于组合来自每个移动站的输入信号的第二多个4路分频器和装饰 用于控制第一和第二多个可变衰减器的电路,解码器电路从控制计算机的并行端口提供控制输入。