发明名称 |
SYSTEM AND METHOD FOR CONTENTION BASED TONES IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM |
摘要 |
Systems and methods for round-trip-delay adjustment in a multipoint-to-point orthogonal frequency division multiplexing (OFDM) system are provided. In one embodiment, a method for a remote unit to request bandwidth in an Orthogonal Frequency Division Multiplexing (OFDM) multi-point to point system comprises: transmitting a signal from a remote unit having a request for bandwidth to a host unit on a first tone, the signal from the remote unit configured to combine with a signal from at least one other remote unit on a different tone to form a coherent OFDM waveform; determining when a collision has occurred on the first tone between the signal transmitted by the remote unit and a signal from at least one other remote unit; and when a collision occurs, re-transmitting the request for bandwidth on the first tone.
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申请公布号 |
US2008040763(A1) |
申请公布日期 |
2008.02.14 |
申请号 |
US20070925725 |
申请日期 |
2007.10.26 |
申请人 |
ADC TELECOMMUNICATIONS, INC. |
发明人 |
GEILE MICHAEL J.;ROBERTS HAROLD A. |
分类号 |
H04N7/173;G06F17/14;H04B10/272;H04H20/69;H04H20/77;H04H20/78;H04H20/79;H04H20/80;H04H60/86;H04H60/96;H04H60/97;H04J3/14;H04J14/02;H04L1/00;H04L1/24;H04L5/02;H04L5/14;H04L12/10;H04L12/12;H04L12/24;H04L12/26;H04L12/28;H04L12/44;H04L25/03;H04L27/00;H04L27/26;H04L27/34;H04M7/00;H04M9/02;H04N7/22;H04N7/24 |
主分类号 |
H04N7/173 |
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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