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    • 1. 发明申请
    • Two-dimensional spreading method for an OFDM-CDM system
    • 用于OFDM-CDM系统的二维扩展方法
    • US20070036068A1
    • 2007-02-15
    • US11497583
    • 2006-08-02
    • Myeon-Gyun ChoCheol-Woo YouJong-Hyung Kwun
    • Myeon-Gyun ChoCheol-Woo YouJong-Hyung Kwun
    • H04J11/00H04J13/00
    • H04L5/0017H04B1/713H04L5/0041H04L27/2605
    • A transmission apparatus and method for a communication system based on Orthogonal Frequency Division Multiplexing-Code Division Multiplexing (OFDM-CDM). A frequency spreader multiplies symbols to be transmitted by a frequency spreading factor and outputs frequency spread symbols whose number corresponds to the frequency spreading factor. Buffers whose number corresponds to the frequency spreading factor temporarily store the frequency spread symbols in a unit of a predefined number of symbols. A time spreader multiplies parallel frequency spread symbols from the buffers by a time spreading factor and outputs frequency-time spread symbols. An Inverse Fast Fourier Transform (IFFT) processor performs IFFT on the frequency-time spread symbols, and outputs an OFDM symbol. A Guard Interval (GI) inserter inserts a GI into a signal output from the IFFT processor and transmits the signal. The system can obtain complete diversity gain and residual gain due to the effect of a time-varying channel in any channel environment.
    • 一种基于正交频分复用码分多路复用(OFDM-CDM)的通信系统的发送装置和方法。 频率扩展器将通过频率扩展因子发送的符号相乘,并输出数字对应于频率扩展因子的频率扩展符号。 其数量对应于频率扩展因子的缓冲器以预定数量的符号的单位临时存储频率扩展符号。 时间扩展器将来自缓冲器的并行频率扩展符号乘以时间扩展因子并输出频率 - 时间扩展符号。 逆快速傅里叶变换(IFFT)处理器对频率 - 时间扩展符号执行IFFT,并输出OFDM符号。 保护间隔(GI)插入器将GI插入从IFFT处理器输出的信号中并发送信号。 由于任何信道环境中时变信道的影响,系统可以获得完整的分集增益和剩余增益。
    • 6. 发明申请
    • Method for allocating resources in a wireless communication system
    • 在无线通信系统中分配资源的方法
    • US20070049283A1
    • 2007-03-01
    • US11508049
    • 2006-08-22
    • Eung-Sun KimYung-Soo KimCheol-Woo YouJong-Hyung Kwun
    • Eung-Sun KimYung-Soo KimCheol-Woo YouJong-Hyung Kwun
    • H04Q7/20
    • H04W48/12H04W72/048
    • Disclosed is a cellular-based wireless communication system, and more particularly a method for allocating resources for data transmission in a cellular-based wireless communication system employing a multicarrier scheme. Frequency resources are divided into time slots defined by one frame and the divided time slots are allocated to an uplink and the downlink. During a predetermined time period, the frequency resources are allocated as resources for transmitting sync preambles. During a next predetermined time period, the frequency resources are allocated in such a manner that the frequency resources for sectors are successively and repeatedly used as resources for transmitting broadcasting messages on a sector-by-sector basis. In the remaining time slots, except the time slots for transmitting the preambles and the broadcasting messages, the frequency resources are allocated as resources for transmitting channel estimation midambles for dynamic channel allocation.
    • 公开了一种基于蜂窝的无线通信系统,更具体地,涉及一种在采用多载波方案的基于蜂窝的无线通信系统中为数据传输分配资源的方法。 频率资源划分为一帧定义的时隙,分配的时隙分配给上行链路和下行链路。 在预定时间段期间,频率资源被分配为用于发送同步前导码的资源。 在下一个预定时间段期间,频率资源被分配成使得用于扇区的频率资源被连续和重复地用作用于逐扇区地发送广播消息的资源。 在剩余时隙中,除了用于发送前导码和广播消息的时隙之外,频率资源被分配为用于发送用于动态信道分配的信道估计中间码的资源。
    • 8. 发明授权
    • Method for allocating resources in a wireless communication system
    • 在无线通信系统中分配资源的方法
    • US07796997B2
    • 2010-09-14
    • US11508049
    • 2006-08-22
    • Eung-Sun KimYung-Soo KimCheol-Woo YouJong-Hyung Kwun
    • Eung-Sun KimYung-Soo KimCheol-Woo YouJong-Hyung Kwun
    • H04W88/02
    • H04W48/12H04W72/048
    • Disclosed is a cellular-based wireless communication system, and more particularly a method for allocating resources for data transmission in a cellular-based wireless communication system employing a multicarrier scheme. Frequency resources are divided into time slots defined by one frame and the divided time slots are allocated to an uplink and the downlink. During a predetermined time period, the frequency resources are allocated as resources for transmitting sync preambles. During a next predetermined time period, the frequency resources are allocated in such a manner that the frequency resources for sectors are successively and repeatedly used as resources for transmitting broadcasting messages on a sector-by-sector basis. In the remaining time slots, except the time slots for transmitting the preambles and the broadcasting messages, the frequency resources are allocated as resources for transmitting channel estimation midambles for dynamic channel allocation.
    • 公开了一种基于蜂窝的无线通信系统,更具体地,涉及一种在采用多载波方案的基于蜂窝的无线通信系统中为数据传输分配资源的方法。 频率资源划分为一帧定义的时隙,分配的时隙分配给上行链路和下行链路。 在预定时间段期间,频率资源被分配为用于发送同步前导码的资源。 在下一个预定时间段期间,频率资源被分配成使得用于扇区的频率资源被连续和重复地用作用于逐扇区地发送广播消息的资源。 在剩余时隙中,除了用于发送前导码和广播消息的时隙之外,频率资源被分配为用于发送用于动态信道分配的信道估计中间码的资源。