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 contention based tones in a multipoint-to-point orthogonal frequency division multiplexing system are provided. In one embodiment, a multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system comprises: a host unit; a plurality of remote units that access the host unit using an orthogonal frequency division multiple access scheme; wherein each of the remote units modulates upstream information into an OFDM signal modulated using a Fourier transform; wherein the host unit receives upstream OFDM signals from a plurality of the remote units, wherein portions of the upstream OFDM signals arrive at the host unit at the same time; wherein a first remote unit transmits a first upstream signal to the host unit on a first orthogonal tone; and wherein the first remote unit retransmits the first upstream signal to the host unit in the event a collision occurs on the first orthogonal tone.
|
申请公布号 |
US7400572(B2) |
申请公布日期 |
2008.07.15 |
申请号 |
US20070923619 |
申请日期 |
2007.10.24 |
申请人 |
ADC TELECOMMUNICATIONS INC. |
发明人 |
GEILE MICHAEL J.;ROBERTS HAROLD A. |
分类号 |
H04J11/00;G06F17/14;H04B10/272;H04H20/69;H04H20/77;H04H20/78;H04H20/79;H04H20/80;H04H60/86;H04H60/96;H04H60/97;H04J1/00;H04J3/02;H04J3/14;H04J3/16;H04J3/22;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;H04N7/173;H04N7/22;H04N7/24 |
主分类号 |
H04J11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|