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    • 87. 发明公开
    • 시스템의 성능 향상을 위한 채널 사운딩
    • 用于改进系统性能的通道声音
    • KR1020140018426A
    • 2014-02-12
    • KR1020140009969
    • 2014-01-27
    • 인터디지탈 테크날러지 코포레이션
    • 레비조셉에스
    • H04L27/26
    • H04B17/26H04B7/02H04B7/0413H04B7/0417H04B7/0421H04B7/0443H04B7/0619H04B7/0626H04L1/0001H04L1/0003H04L1/0026H04L5/0044H04L27/26H04L27/2608H04L69/323H04L69/324H04W24/02H04W52/42H04W72/0413H04W72/042
    • A transmitter generates a low-rate signal and transmits the signal to a target receiver. The target receiver generates a channel sounding response (CSR) and transmits the response when receiving the low-rate signal. The CSR is a short bust which delivers a predetermined information while having a predetermined transmission format. The transmitter analyzes the CSR afterward, determines an uplink channel response, estimates a downlink channel response, and determines a proper transmission parameter setting value based on the analysis and downlink channel response. Control of the transmission parameter is performed in one between medium access control (MAC) layer or physical (PHY) layer, or in combination of the two layers. The transmitter controls the transmission parameter, modulates user data according to the determined transmission parameter setting value, and then transmits the user data to the receiver through a desired part of the bandwidth. In a desired embodiment, the transmitter generates a transmit format control (TEC) signal which includes subcarrier modulation information and the determined transmission parameter setting value, and transmits the TEC signal to the receiver. [Reference numerals] (201) Transmitter-side channel sounding processor; (202) Transmitter; (203) MAC layer processor; (204) Receiver; (205) PHY layer processor; (206) Transmitter-side TFC processor; (208) Transmitter-side signal monitoring processor; (210) Transmitter-side memory; (211) Receiver-side channel sounding processor; (213) Receiver-side TFC processor; (215) Data packet processor; (217) Receiver-side signal monitoring processor; (219) Receiver-side memory; (221) Processor for adjustment; (AA) Data of the transmitter; (BB,EE) MIMO antenna interface; (DD) Wireless interface
    • 发射机产生低速率信号并将信号发送到目标接收机。 目标接收机产生信道探测响应(CSR),并在接收到低速率信号时发送响应。 CSR是具有预定传输格式的预定信息的短的胸围。 发射机对CSR进行分析,确定上行信道响应,估计下行信道响应,并根据分析和下行信道响应确定适当的传输参数设置值。 传输参数的控制在介质访问控制(MAC)层或物理(PHY)层之间或两层的组合中进行。 发射机控制传输参数,根据确定的传输参数设置值调制用户数据,然后通过所需带宽的一部分将用户数据发送给接收机。 在期望的实施例中,发射机产生包括子载波调制信息和确定的传输参数设置值的发射格式控制(TEC)信号,并将TEC信号发射到接收机。 (201)发射机侧信道探测处理器; (202)变送器; (203)MAC层处理器; (204)接收者; (205)PHY层处理器; (206)发射机侧TFC处理器; (208)发射机侧信号监控处理器; (210)发射机侧存储器; (211)接收机侧声道探测处理器; (213)接收机侧TFC处理器; (215)数据包处理器; (217)接收机侧信号监控处理器; (219)接收机侧存储器; (221)调整处理器 (AA)变送器数据; (BB,EE)MIMO天线接口; (DD)无线接口
    • 90. 发明公开
    • 시스템의 성능 향상을 위한 채널 사운딩
    • 用于改进系统性能的通道声音
    • KR1020130095239A
    • 2013-08-27
    • KR1020130092964
    • 2013-08-06
    • 인터디지탈 테크날러지 코포레이션
    • 레비조셉에스
    • H04J11/00H04B7/04
    • H04B17/26H04B7/02H04B7/0413H04B7/0417H04B7/0421H04B7/0443H04B7/0619H04B7/0626H04L1/0001H04L1/0003H04L1/0026H04L5/0044H04L27/26H04L27/2608H04L69/323H04L69/324H04W24/02H04W52/42H04W72/0413H04W72/042H04L5/0048
    • PURPOSE: A channel sounding for improving a system performance is provided to improve the total performance of an OFDM-MIMO system by effectively estimating the current channel condition. CONSTITUTION: A channel sounding processor (201) evaluates the channel condition of a communications link between a transmitter and a receiver. An MAC layer processor (203) establishes the data transmission parameter. A physical layer processor (205) diffuses data bit among subcarrier intervals and transmission antennas (2071-207n). A transport format control processor (206) processes information from the MAC layer processor and physical layer processor. A memory element (210) maintains the history of the channel condition and the determined transmission parameter. [Reference numerals] (201) Channel sounding processor on a transmitting side; (202) Transmitter; (203) MAC layer processor; (204) Receiver; (205) PHY layer processor; (206) TFC processor on a transmitting side; (208) Signal monitoring processor on a transmitting side; (211) Channel sounding processor on a receiving side; (213) TFC processor on a receiving side; (215) Data packet processor; (217) Signal monitoring processor on a receiving side; (219) Receiving memory; (221) Adjusting processor; (AA) Data of the receiver; (BB) MIMO antenna interface; (CC) Wireless interface; (DD) MIMO antenna interface
    • 目的:提供一种提高系统性能的通道,通过有效估计当前信道状况来提高OFDM-MIMO系统的总体性能。 构成:信道探测处理器(201)评估发射机和接收机之间的通信链路的信道状况。 MAC层处理器(203)建立数据传输参数。 物理层处理器(205)在子载波间隔和发送天线(2071-207n)之间扩散数据位。 传输格式控制处理器(206)处理来自MAC层处理器和物理层处理器的信息。 存储元件(210)保持信道条件的历史和确定的传输参数。 (201)发送侧的通道探测处理器; (202)变送器; (203)MAC层处理器; (204)接收者; (205)PHY层处理器; (206)发送侧的TFC处理器; (208)发送侧的信号监控处理器; (211)接收侧的声道探测处理器; (213)接收侧的TFC处理器; (215)数据包处理器; (217)接收侧的信号监控处理器; (219)接收记忆; (221)调整处理器; (AA)接收机的数据; (BB)MIMO天线接口; (CC)无线接口; (DD)MIMO天线接口