发明名称 |
DELAY COMPENSATION IN A DISCRETE MULTITONE SPREAD SPECTRUM COMMUNICATIONS SYSTEM |
摘要 |
In a discrete multitone spread spectrum system, a base station receives a transmission burst from a remote unit being installed that includes delay compensation pilot tones that are uniformly spread throughout the transmission bandwidth. The arrival time transmission burst is not synchronized with the other remote units transmitting to the base station. The base station measures the phase delay of each tone and calculates the delay of the remote unit from the slope of the line of phase angle versus tone frequency. The base station transmits a signal to the remote unit that includes the magnitude and direction of the delay, which allows the remote unit to adapt the timing of its transmission to be synchonized with the other remote units.
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申请公布号 |
WO9835456(A1) |
申请公布日期 |
1998.08.13 |
申请号 |
WO1998US01906 |
申请日期 |
1998.02.03 |
申请人 |
AT & T WIRELESS SERVICES, INC. |
发明人 |
HOOLE, ELLIOTT |
分类号 |
H04B1/69;H04J3/06;H04L5/02;H04L27/26;(IPC1-7):H04B7/26;H04B1/707 |
主分类号 |
H04B1/69 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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