发明名称 |
Preamble for a TFI-OFDM communications system |
摘要 |
System and method for simplifying preamble detection and reducing power consumption in receivers. A preferred embodiment comprises a preamble made up of two sequences, a first sequence that is specified in the time domain and a second sequence that is specified in the frequency domain. The first sequence which comprises multiple copies of a time domain code sequence can allow easy detection of the preamble while the second sequence comprises multiple copies of a frequency domain code sequence and allows easy determination of the frequency response of the communications channel. A hierarchical sequence can be used to allow multi-stage correlation. This can result in a less complex correlator, hence lower power consumption. Piconets can use different code sequences to allow rapid determination of the source of a transmission without requiring the receiver to decode the entire transmission.
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申请公布号 |
US7634020(B2) |
申请公布日期 |
2009.12.15 |
申请号 |
US20040782095 |
申请日期 |
2004.02.19 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
BATRA ANUJ;BALAKRISHNAN JAIGANESH;DABAK ANAND |
分类号 |
H04L27/00;H04B1/707;H04L27/26 |
主分类号 |
H04L27/00 |
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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