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    • 3. 发明授权
    • Determining transmit signal powers of channels in a CDMA communications system
    • 确定CDMA通信系统中信道的发射信号功率
    • US06724719B1
    • 2004-04-20
    • US09502050
    • 2000-02-11
    • Wen TongRui R. Wang
    • Wen TongRui R. Wang
    • H04J1100
    • H04W52/343H04W52/346H04W72/08
    • A plurality of data channels provide respective data rates and maximum error rates from a mobile station to a base station of a CDMA system; a pilot channel facilitates recovery of the data channels. For each data channel there is determined a channel energy to noise ratio (ENR) and a required pilot channel ENR. A maximum one of the required pilot channel ENRs is selected as an ENR for transmission of the pilot channel. A relative gain, and hence transmit signal power, for each data channel is determined from the ENR determined for the data channel and the selected maximum ENR for transmission of the pilot channel, thereby minimizing the total transmitted signal power of the mobile station. The data channel signals are spread using orthogonal Walsh codes and are combined with their determined relative gains.
    • 多个数据信道提供从CDMA系统的移动台到基站的相应数据速率和最大误码率; 导频信道便于恢复数据信道。 对于每个数据信道,确定信道能量噪声比(ENR)和所需的导频信道ENR。 选择所需导频信道ENR中的最大一个作为用于传输导频信道的ENR。 从针对数据信道确定的ENR和用于传输导频信道的所选择的最大ENR确定每个数据信道的相对增益,并因此传输信号功率,从而最小化移动台的总发射信号功率。 数据信道信号使用正交沃尔什码进行扩展,并与其确定的相对增益相结合。
    • 5. 发明授权
    • Methods and apparatus for turbo code
    • turbo码的方法和装置
    • US06442728B1
    • 2002-08-27
    • US09263431
    • 1999-03-04
    • Jian CuiBin LiWeng TongRui R. Wang
    • Jian CuiBin LiWeng TongRui R. Wang
    • H03M1300
    • H03M13/275H03M13/271
    • An interleaver receives incoming data frames of size N. The interleaver indexes the elements of the frame with an N1×N2 index array. The interleaver then effectively rearranges (permutes) the data by permuting the rows of the index array. The interleaver employs the equation I(j,k)=I(j,&agr;jk+&bgr;j)modP) to permute the columns (indexed by k) of each row (indexed by j). P is at least equal to N2, &bgr;j is a constant which may be different for each row, and each &agr;j is a relative prime number relative to P. After permuting, the interleaver outputs the data in a different order than received (e.g., receives sequentially row by row, outputs sequentially each column by column).
    • 交织器接收大小为N的输入数据帧。交织器用N1xN2索引数组对帧的元素进行索引。 然后,交织器通过置换索引数组的行来有效地重新排列(排列)数据。 交织器使用等式I(j,k)= I(j,alphajk + betaj)modP)来排列每行(由j索引)的列(由k索引)。 P至少等于N2,betaj是对于每行可以是不同的常数,并且每个alphaj是相对于P的相对素数。在置换之后,交织器以与接收的不同的顺序输出数据(例如,接收 按顺序排列,逐列依次输出)。
    • 7. 发明授权
    • Variable step size for power control bits to protect against power overshoot
    • 功率控制位的可变步长可防止电源过冲
    • US06311070B1
    • 2001-10-30
    • US09273411
    • 1999-03-22
    • Wen TongRui R. Wang
    • Wen TongRui R. Wang
    • H04B700
    • H04W52/367H04W52/362
    • The invention provides a system and method for controlling transmission power of a mobile unit in a wireless communication system which minimizes transmission power overshoot caused by counteracting the effects of deep fading. The power control bits are received by the mobile unit then examined on an individual basis and also as a block of bits. Initially, each time a request to increase power is received the mobile unit increases the transmission power by 1 dB. When the mobile unit determines that a predetermined number of bits in a block each indicates a request to increase power is received the mobile unit increases the transmission power by 2 dB. After the block of increase requests, if the mobile receives a request to decrease the transmission power it increases the transmission power by 2 dB, then decreases the transmission power for the next two power control periods by 3 dB each.
    • 本发明提供一种用于控制无线通信系统中的移动单元的发送功率的系统和方法,其最小化通过抵消深衰落的影响而导致的发送功率过冲。 功率控制位由移动单元接收,然后在单独的基础上检测并且还作为位块。 最初,每当接收到增加功率的请求时,移动单元将发射功率提高1dB。 当移动单元确定块中的预定数量的比特指示增加功率的请求被接收时,移动单元将发射功率提高2dB。 在增加请求块之后,如果移动台接收到降低发射功率的请求,则将发射功率提高2dB,则将下两个功率控制周期的发射功率降低3dB。