Communications system employing differential ortho

专利名称：Communications system employing

differential orthogonal modulation

发明人：Edgar H. Callaway,Neiyer S. Correal,Paul E.

Gorday,Frederick L. Martin,Qicai Shi

申请号：US10022942申请日：20011218

公开号：US20030012259A1公开日：20030116

专利附图：

摘要：A system and method for orthogonal modulation of signals in communicationsystems. In the transmitter, differentially coded symbols are used to select time-shifted

code sequences. The timing, or code position, of a code sequence is determined at thereceiver by comparison to the previous code from the same channel, thus eliminating theneed for dual-channel transmission and eliminating error due to differences in pathpropagation time. A fixed preamble code is also used to synchronize the receiver.

申请人：CALLAWAY EDGAR H.,CORREAL NEIYER S.,GORDAY PAUL E.,MARTINFREDERICK L.,SHI QICAI

更多信息请下载全文后查看