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    • 6. 发明申请
    • TRANSMITTER, RECEIVER AND METHOD FOR CONTROLLING MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM
    • 用于控制多输入多输出系统的发射器,接收器和方法
    • US20090252247A1
    • 2009-10-08
    • US11721161
    • 2005-12-07
    • Heesoo LeeHyo Jin LeeJae Young Ahn
    • Heesoo LeeHyo Jin LeeJae Young Ahn
    • H04B7/02
    • H04W52/42H04B7/0417H04B7/0626
    • Provided is a method of controlling a multiple input multiple output (MIMO) system. One embodiment of the method includes the steps of: estimating, at a receiver, a MIMO channel and detecting data streams using a successive interference cancellation scheme; calculating, at the receiver, S and P using the estimated channel and then feeding back information corresponding to (P1, P2, . . . , PM-1, SINR5M) to a transmitter, and determining, at the transmitter, a transfer rate and transmission power perstream using the fed-back information. Another embodiment of the method includes the steps of: estimating, at a receiver, a MIMO channel and detecting data streams using a signal received from an antenna; extracting, at the receiver, a feedback parameter to be fed back to the transmitter using the estimated channel, and feeding back the feedback parameter to the transmitter, and determining, at the transmitter, a stream to be allocated to the receiver from among the streams of the transmitter using the fed-back parameter and a data transfer rate per stream, wherein the feedback parameter is information corresponding to a successive interference cancellation order and a signal-to-interference-plus-noise ratio (SINR) per stream reflecting successive interference cancellation.
    • 提供了一种控制多输入多输出(MIMO)系统的方法。 该方法的一个实施例包括以下步骤:在接收机处估计MIMO信道并使用连续干扰消除方案来检测数据流; 在接收机处使用估计的信道计算S和P,然后将对应于(P1,P2,...,PM-1,SINR5M)的信息反馈给发射机,并且在发射机处确定传输速率和 使用反馈信息的每个流的传输功率。 该方法的另一实施例包括以下步骤:在接收机处估计MIMO信道并使用从天线接收的信号来检测数据流; 在接收机处,使用所估计的信道在反馈参数中提取要反馈到发射机的反馈参数,以及将所述反馈参数反馈到所述发射机,以及在所述发射机处,从所述流中确定要分配给所述接收机的流 使用反馈参数和每个流的数据传输速率,其中反馈参数是对应于连续干扰消除次序的信息和每个反映连续干扰的流的信噪比加噪声比(SINR) 消除。
    • 7. 发明申请
    • Frequency hopping method in orthogonal frequency division multiplexing system
    • 正交频分复用系统中的跳频方法
    • US20060203707A1
    • 2006-09-14
    • US10540740
    • 2003-11-21
    • Heesoo LeeKyung-Hi Chang
    • Heesoo LeeKyung-Hi Chang
    • H04B1/00H04J11/00
    • H04L5/023H04B1/7143H04B2001/7154H04J11/005H04L27/2601
    • Disclosed is a frequency hopping method in an OFDM system, comprising: (a) detecting a mutual interference degree between different cells, and determining whether to use different frequency hopping patterns between the cells for interference averaging according to the mutual interference degree interference degree; (b) determining a number P of the different frequency hopping patterns needed between all the cells in the system; (c) generating the frequency hopping patterns of more than the number P and allocating the generated frequency hopping patterns to each cell, the frequency hopping patterns having the same frequency collision times between two channels in the different frequency hopping patterns; and (d) frequency-hopping the channels in each cell according to the allocated frequency hopping pattern.
    • 公开了一种OFDM系统中的跳频方法,包括:(a)检测不同小区之间的相互干扰度,并根据所述干扰度干扰度确定是否在所述小区之间使用不同的跳频图案进行干扰平均; (b)确定系统中所有单元之间所需的不同跳频图案的数量P; (c)产生多于数目P的跳频模式,并将生成的跳频模式分配给每个小区,跳频模式在不同跳频模式中的两个信道之间具有相同的频率冲突时间; 和(d)根据分配的跳频图案对每个小区中的信道进行跳频。