Method of synchronization for code division multiple access
radiotelephone communications
    1.
    发明授权
    Method of synchronization for code division multiple access radiotelephone communications 失效
    码分多址无线电话通信的同步方法

    公开(公告)号:US5544155A

    公开(公告)日:1996-08-06

    申请号:US260928

    申请日:1994-06-15

    摘要: A synchronization method includes selecting, at a mobile station, at least one periodic pseudorandom sequence (PN) which corresponds to, and is synchronized with, the reference sequence transmitted by a base station on a pilot channel, and received by the mobile station over a propagation path, this operation being carried out regardless of the frequency deviation between the transmitter and the receiver. Various possible sequences are tested by calculating the quantities E[s(t).multidot.s*(t-.tau.)] and E[s(t).multidot.s*(t)], where E[.multidot.] designates the mean value calculated over a predetermined integration time, .tau. designates a predetermined delay, and s(t)=r(t).multidot.c(t) designates the product of the received base band signal r(t) and the value (c(t)) of the tested sequence, and by calculating the ratio .vertline.E[s(t).multidot.s*(t-.tau.)][.vertline./Es(t).multidot.s*(t)]. The sequence under test is selected if the ratio exceeds a predetermined threshold.

    摘要翻译: 同步方法包括在移动台处选择与由基站在导频信道上发送的参考序列对应并与之同步的至少一个周期性伪随机序列(PN),并由移动站通过一个 传播路径,无论发射机和接收机之间的频率偏差如何,都要执行此操作。 通过计算量E [s(t)xs *(t-τ)]和E [s(t)xs *(t)]来测试各种可能的序列,其中E [x]表示在预定 积分时间τ表示预定的延迟,s(t)= r(t)xc(t)表示被测序列的接收基带信号r(t)和值(c(t))的乘积, 并且通过计算比率| E [s(t)xs *(t-τ)] [| / Es(t)xs *(t)]。 如果比率超过预定阈值,则选择待测序列。

    Increased throughput in radio-frequency communications
    2.
    发明授权
    Increased throughput in radio-frequency communications 有权
    增加射频通信的吞吐量

    公开(公告)号:US09439224B2

    公开(公告)日:2016-09-06

    申请号:US13322413

    申请日:2010-05-27

    IPC分类号: H04W74/08

    CPC分类号: H04W74/0841

    摘要: A mobile telephony radiocommunication management process, with first time slots and second time slots being provided independently of each other, said process comprising the default selection of first time slots for transmitting/receiving first bursts corresponding to these first time slots, and in the case of a first time slot at least partially overlapping with a second time slot, choosing the first time slot or the second time slot, for respectively transmitting/receiving the first burst corresponding to the first time slot or receiving the second burst corresponding to the second time slot, with this choice being made so as to minimize the number of second bursts received for a given result.

    摘要翻译: 一种移动电话无线电通信管理过程,其中第一时隙和第二时隙彼此独立地提供,所述进程包括用于发送/接收对应于这些第一时隙的第一突发的第一时隙的默认选择,并且在 与第二时隙至少部分重叠的第一时隙,选择第一时隙或第二时隙,用于分别发送/接收对应于第一时隙的第一突发或接收对应于第二时隙的第二突发 ,进行这种选择以使给定结果接收的第二突发的数量最小化。