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    • 3. 发明申请
    • METHOD AND APPARATUS FOR PERFORMING DATA RATE DETERMINATION
    • 用于执行数据速率确定的方法和装置
    • WO1998019405A1
    • 1998-05-07
    • PCT/US1997019678
    • 1997-10-27
    • QUALCOMM INCORPORATED
    • QUALCOMM INCORPORATEDSAINTS, Keith, W.TIEDEMANN, Edward, G., Jr.
    • H04B07/26
    • H04L1/08H04L25/0262
    • A system and method for determining the transmission rate of a data signal at a receiver of a variable rate communications system. A vocoder at a transmitter encodes a frame of data into symbols according to one of a set of discrete data rates. When the data rate is lower than the maximum, each symbol is repeated a number of times as required to achieve a constant number of symbols in each frame. The data signal is transmitted at a power proportional to the data rate of the frame. A reference signal is also transmitted. The reference signal is transmitted at a constant power. Further, the data signal has the same carrier frequency as a reference signal so that they exhibit the same fading characteristics as they are transmitted through the channel. At a receiver, the power of the reference signal is measured by the pilot measurement element (36) and the power of the data signal is measured by the traffic power measurement element (38). The rate processor (46) dtermines the ratio of the power of the data signal to the power of the reference signal, and the measured ratio is compared with a predetermined ratio of the power of a maximum rate data signal to the power of the reference signal. The result of the comparison will indicate the encoded data rate of the received frame of data. The decoder (40) then uses the rate indicated by the comparison to properly decode the frame of data. A vocoder at the receiver further processes the data for interface with the user.
    • 一种用于确定可变速率通信系统的接收机处的数据信号的传输速率的系统和方法。 发射机中的声码器根据一组离散数据速率之一将数据帧编码成符号。 当数据速率低于最大值时,每个符号根据需要重复多次以在每个帧中实现恒定数量的符号。 以与帧的数据速率成比例的功率发送数据信号。 参考信号也被发送。 参考信号以恒定功率传输。 此外,数据信号具有与参考信号相同的载波频率,使得它们呈现与通过信道传输相同的衰落特性。 在接收机中,参考信号的功率由导频测量元件(36)测量,数据信号的功率由业务功率测量元件(38)测量。 速率处理器(46)计算数据信号的功率与参考信号的功率的比率,并将测量的比率与最大速率数据信号的功率与参考信号的功率的预定比率进行比较 。 比较结果将指示接收的数据帧的编码数据速率。 然后,解码器(40)使用由比较指示的速率来适当地解码数据帧。 在接收器处的声码器进一步处理与用户接口的数据。
    • 7. 发明申请
    • METHOD AND APPARATUS FOR TESTING A DIGITAL COMMUNICATION CHANNEL AT VARIABLE OR FIXED DATA RATES
    • 用于测试可变或固定数据速率的数字通信信道的方法和装置
    • WO1996017454A1
    • 1996-06-06
    • PCT/US1995015534
    • 1995-11-29
    • QUALCOMM INCORPORATED
    • QUALCOMM INCORPORATEDTIEDEMANN, Edward, G., Jr.JOU, Yu-CheunWEAVER, Lindsay, A., Jr.BAYLEY, Gwain
    • H04L01/24
    • H04L1/20H04L1/241H04L1/242H04L2027/0034
    • The invention provides a system and method for testing signal transmission quality wihin a digital communication system and may be incorporated within a digital cellular communication system in which information is exchanged over spread spectrum communication channels. A test sequence of digital data transmitted over the communication channel is received at a receiving station, within which is also generated a replica of the test sequence of digital data. The accuracy of transmission over the communication channel is then determined by comparing the replica of the test sequence of digital data to the test sequence of data received over the communication channel. The invention allows the test sequence of digital data to be transmitted at one of a set of known data rates, with the received station being disposed to identify the data rate associated with each test sequence of digital data. In order to simulate the transmission of, for example, voice data, the system may be configured such that each test sequence of digital data is generated in accordance with a pseudorandom process.
    • 本发明提供了一种用于在数字通信系统中测试信号传输质量的系统和方法,并且可以被并入通过扩频通信信道交换信息的数字蜂窝通信系统内。 在接收站处接收通过通信信道发送的数字数据的测试序列,其中还产生数字数据的测试序列的副本。 然后通过将数字数据的测试序列的副本与通过通信信道接收的数据的测试序列进行比较来确定通信信道上的传输的准确性。 本发明允许数字数据的测试序列以一组已知数据速率中的一个发送,其中接收的站被设置为识别与数字数据的每个测试序列相关联的数据速率。 为了模拟例如语音数据的传输,可以配置系统,使得数字数据的每个测试序列根据伪随机过程生成。
    • 10. 发明申请
    • TRANSMISSION FORMAT INFORMATION TRANSMISSION ON DEDICATED CHANNELS
    • 传输格式信息传输专用信道
    • WO2003094391A1
    • 2003-11-13
    • PCT/US2003/013379
    • 2003-04-29
    • QUALCOMM, INCORPORATED
    • TIEDEMANN, Edward, G., Jr.WEI, YongbinGAAL, PeterHO, Sai Yiu Duncan
    • H04B7/26
    • H04J13/0048H04J13/18
    • Transmissions on the dedicated channel are encoded using a set of parameters that are picked from a large selection of potential parameters. If the remote station does not know the particular set of parameters that were used by a base station, then the remote station would have to attempt to decode the transmission using every set of parameters, until the transmission is decoded correctly. This is an inefficient methodology. Hence, transmission format information is typically transmitted on a broadcast channel so that a remote station could receive the transmission format information. However, the broadcast channel has reliability problems. New methods and apparatus are presented to allow a base station to determine an overlapping set of Walsh code sequences that can be used to send the transmission format information on the dedicated channel, rather than a broadcast channel. (620) Using the overlapping set allows the remote station to decode the information.
    • 使用从大量潜在参数中挑选的一组参数对专用信道上的传输进行编码。 如果远程站不知道基站使用的特定参数集合,则远程站将不得不尝试使用每组参数对传输进行解码,直到传输被正确解码为止。 这是一种效率低下的方法。 因此,通常在广播信道上发送传输格式信息,使得远程站可以接收传输格式信息。 然而,广播频道具有可靠性问题。 提出了新的方法和装置,以允许基站确定可用于在专用信道而不是广播信道上发送传输格式信息的沃尔什码序列的重叠集合。 (620)使用重叠集允许远程站对信息进行解码。