公开(公告)号：US5343494A

公开(公告)日：1994-08-30

申请号：US4160

申请日：1993-01-13

申请人： Douglas I. Averst ,  Stephen R. Carsello ,  Warren P. Glotzbach

发明人： Douglas I. Averst ,  Stephen R. Carsello ,  Warren P. Glotzbach

IPC分类号： H04W68/10 ,  H04W88/18 ,  H04L9/00 ,  H04L27/30

CPC分类号： H04W88/185 ,  H04W68/10

摘要： A method for receiving and processing data in a portable transceiver (20) comprises the steps of receiving (320) at least one information signal and decoding (325) the at least one information signal to recover information included therein. The method further comprises the steps of generating (345) a pseudo-noise (PN) sequence in accordance with the information.

摘要翻译： 一种用于在便携式收发器（20）中接收和处理数据的方法包括以下步骤：接收（320）至少一个信息信号并解码（325）所述至少一个信息信号以恢复其中包括的信息。 该方法还包括根据该信息产生（345）伪噪声（PN）序列的步骤。

公开(公告)号：US5550872A

公开(公告)日：1996-08-27

申请号：US327753

申请日：1994-10-24

申请人： Joseph C. Liberti, Jr. ,  Douglas I. Averst ,  Tony R. Branch ,  Stephen R. Carsello

发明人： Joseph C. Liberti, Jr. ,  Douglas I. Averst ,  Tony R. Branch ,  Stephen R. Carsello

IPC分类号： H04B7/08 ,  H04L1/02 ,  H04B7/02

CPC分类号： H04B7/0857 ,  H04L1/02

摘要： A method and apparatus diversity-combine radio signals received from a plurality of branches (108, 214). Each radio signal comprises a plurality of subchannels (806). The radio signal from each branch (108, 214) is digitized (904) into digital samples that are converted (908, 910) into frequency domain signals (702, 712). Each frequency domain signal (702, 712) corresponds to a subchannel and a branch (108, 214). A weighting factor is determined (916) for each branch (108, 214) and each subchannel (806) from instantaneous signal energy and noise power calculated (912, 914) from the frequency domain signals (702, 712). The frequency domain signal (702, 712) corresponding to each branch (108, 214) and each subchannel (806) is multiplied (918) by the weighting factor therefor to produce weighted frequency domain signals corredponding to each branch and each subchannel. The weighted frequency domain signals that correspond to all the branches (108, 214) of each subchannel (806) are then combined (920) to produce a diversity-combined frequency domain signal for each subchannel (806).

摘要翻译： 一种方法和装置将从多个分支（108,214）接收的无线电信号进行分集组合。 每个无线电信号包括多个子信道（806）。 来自每个分支（108,214）的无线电信号被数字化（904）成被转换（908,910）的数字采样成为频域信号（702,712）。 每个频域信号（702,712）对应于子信道和分支（108,214）。 根据来自频域信号（702,712）的瞬时信号能量和噪声功率（912,914），为每个分支（108,214）和每个子信道（806）确定加权因子（916）。 对应于每个分支（108,214）和每个子信道（806）的频域信号（702,712）被乘以（918）加权因子，以产生响应于每个分支和每个子信道的加权的频域信号。 然后，将与每个子信道（806）的所有分支（108,214）对应的加权频域信号组合（920）以产生每个子信道（806）的分集组合频域信号。

公开(公告)号：US5533062A

公开(公告)日：1996-07-02

申请号：US316956

申请日：1994-10-03

申请人： Joseph C. Liberti, Jr. ,  Douglas I. Averst ,  Tony R. Branch ,  Stephen R. Carsello

发明人： Joseph C. Liberti, Jr. ,  Douglas I. Averst ,  Tony R. Branch ,  Stephen R. Carsello

IPC分类号： H04L27/156 ,  H04L27/10 ,  H04L7/00 ,  H04L27/14 ,  H04L27/22

CPC分类号： H04L27/1566

摘要： A frequency shift keyed receiver (214, 220, 218) estimates a carrier frequency and demodulates (1020) a symbol value associated with the carrier frequency. During symbol intervals, the receiver (214, 220, 218) receives a radio signal including symbol values (502-518) corresponding to predetermined frequency offsets (604, 606) from a carrier frequency. The radio signal is digitized (1008) during a symbol interval, and then converted (1010) into a frequency domain signal. The frequency domain signal is stored (1012), and additional symbol intervals are converted to obtain a plurality of frequency domain signals, which are processed to generate (1016) a composite frequency domain signal (702, 704). A windowing function (706) of predetermined shape is convolved (1018) with the composite frequency domain signal (702, 704) to locate a frequency distribution therein that corresponds to the predetermined frequency offsets (604, 606). The carrier frequency (708) is estimated from the location of the frequency distribution, and utilized to demodulate (1020) the symbol values.

摘要翻译： 频移键控接收机（214,220,218）估计载波频率并解调（1020）与载波频率相关联的符号值。 在符号间隔期间，接收器（214,220,218）从载波频率接收包括对应于预定频率偏移（604,606）的符号值（502-518）的无线电信号。 无线电信号在符号间隔期间被数字化（1008），然后被转换（1010）成频域信号。 频域信号被存储（1012），并且附加符号间隔被转换以获得多个频域信号，其被处理以产生（1016）复合频域信号（702,704）。 将具有预定形状的加窗功能（706）与复合频域信号（702,704）卷积（1018）以定位其中对应于预定频率偏移（604,606）的频率分布。 从频率分布的位置估计载波频率（708），并用于解调（1020）符号值。