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    • 4. 发明申请
    • JOINT FEED-FORWARD AND FEEDBACK DESIGN FOR WIRELESS COMMUNICATION SYSTEMS
    • 无线通信系统的联合前馈和反馈设计
    • WO2006109123A3
    • 2006-12-07
    • PCT/IB2006000795
    • 2006-04-05
    • NOKIA CORPNOKIA INCRAJAN DINESHREID ANTHONYMANDYAM GIRIDHAR D
    • RAJAN DINESHREID ANTHONYMANDYAM GIRIDHAR D
    • H04L1/12H04B7/005H04L1/20
    • H04L1/0002H04L1/0003H04L1/0017H04L1/0026H04L1/0028H04L1/1874
    • A first method comprises determining a condition of a buffer in a transmitter; using the condition, determining information corresponding to the condition; and communicating the information to a receiver. A second method is disclosed comprising receiving first information corresponding to a condition of a buffer in a transmitter; determining channel state information for a channel from the transmitter to the receiver; using the first information and the determined channel state information, determining second information; and communicating the second information to the transmitter. The second information and the condition of the buffer may be used by the transmitter to determine at least one transmission parameter, e.g., one or both of transmission rate and transmission power for a signal from the transmitter to the receiver. A desired delay constraint for packet traffic over the channel may be achieved.
    • 第一种方法包括确定发射机中的缓冲器的状况; 使用所述条件,确定对应于所述条件的信息; 并将信息传达给接收者。 公开了第二种方法,包括:接收对应于发射机中的缓冲器的状况的第一信息; 确定从发射机到接收机的信道的信道状态信息; 使用所述第一信息和所确定的信道状态信息来确定第二信息; 并将第二信息传送给发射机。 发射机可以使用缓冲器的第二信息和条件来确定至少一个传输参数,例如,从发射机到接收机的信号的传输速率和传输功率中的一个或两个。 可以实现通过信道的分组业务的期望延迟约束。
    • 9. 发明申请
    • APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING JOINT SYNCHRONIZATION USING SEMI-ANALYTIC ROOT-LIKELIHOOD POLYNOMIALS FOR OFDM SYSTEMS
    • 装置,方法和计算机程序产品提供使用半导体基因多样性的OFDM系统的联合同步
    • WO2007074388A2
    • 2007-07-05
    • PCT/IB2006003788
    • 2006-12-28
    • NOKIA CORPNOKIA INCREID ANTHONY
    • REID ANTHONY
    • H04L27/26
    • H04L27/2657H04L25/0226H04L25/0228H04L25/03248H04L25/03273H04L25/03292H04L27/261H04L27/2662H04L27/2665H04L27/2679
    • A method includes determining a number of observations. Each observation occurs at an observation time and corresponds to one of a number of received frequency multiplexed training symbols. The method also includes determining a number of roots of a first polynomial equation that is a function of a variable corresponding to frequency offset errors of carrier frequencies of the training symbols. Constants in the first polynomial equation are determined using at least the observations. The roots of the variable correspond to possible frequency offset errors. Based on at least the observations, the possible frequency offset errors, and possible symbol timing offset errors of the observation times of the training symbols, a number of estimated channel responses are determined corresponding to the training symbols. The method includes using a second polynomial equation that is a function of at least the estimated channel responses, the possible frequency offset errors, and the possible symbol timing offset errors, determining at least a resultant frequency offset error and a resultant symbol timing offset error. The method further includes using the resultant frequency offset error and resultant symbol timing offset error in order to receive at least one frequency multiplexed data symbol.
    • 一种方法包括确定多个观察值。 每个观察发生在观察时间,并且对应于多个接收频率复用训练符号中的一个。 该方法还包括确定作为与训练符号的载波频率的频率偏移误差相对应的变量的函数的第一多项式方程的根数。 使用至少观察值确定第一个多项式方程中的常数。 变量的根对应于可能的频偏错误。 基于训练符号的观察时间的至少观察值,可能的频率偏移误差和可能的符号定时偏移误差,对应于训练符号确定多个估计的信道响应。 该方法包括使用至少是所估计的信道响应,可能的频率偏移误差和可能的符号定时偏移误差的函数的第二多项式方程,至少确定合成的频率偏移误差和合成的符号定时偏移误差。 该方法还包括使用所得到的频率偏移误差和结果符号定时偏移误差,以便接收至少一个频率复用数据符号。