| 发明名称 | Communication method based on bi-level binary digital baseband symbols | ||
| 摘要 | The invention discloses a communication method using dual-level and binary digital baseband symbols which represents information by durations of a high level and a low level instead of by a high level and a low level in conventional digital baseband symbol design. In the invention, waveforms of a symbol 0 and a symbol 1 are determined according to durations of a high level and a low level, a transmitter generates a corresponding digital baseband signal in terms of a binary data to be transmitted according to the defined waveforms, and a receiver determines a symbol 0 or a symbol 1 according to waveform of a received digital baseband signal. The invention realizes bit synchronization of a receiver and a transmitter without extracting a bit synchronization clock from a received signal by the receiver, and a bit rate thereof is higher than that of Manchester under a same signal bandwidth. | ||
| 申请公布号 | US9509344(B1) | 申请公布日期 | 2016.11.29 |
| 申请号 | US201514840937 | 申请日期 | 2015.08.31 |
| 申请人 | Huazhong University of Science and Technology | 发明人 | Guo Peng |
| 分类号 | H04L25/34;H04B1/04 | 主分类号 | H04L25/34 |
| 代理机构 | Hamre, Schumann, Mueller & Larson, P.C. | 代理人 | Hamre, Schumann, Mueller & Larson, P.C. |
| 主权项 | 1. A communication method using dual-level and binary digital baseband symbols, comprising steps of: (1) determining waveforms of a symbol 0 and a symbol 1, said symbol 0 representing a high level with a duration of τ, or a low or negative level with a duration of τ, said symbol 1 representing a high level with a duration of k*τ, or a low or negative level with a duration of k*τ, where τ>0, k>0 and k≠1; (2) generating a digital baseband signal corresponding to a binary data to be transmitted according to said waveforms defined in step (1) by a transmitter: as a waveform of a present symbol is a high level, a waveform of a next symbol is a low or negative level, and as a waveform of a present symbol is a low or negative level, a waveform of a next symbol is a high level; and (3) determining a symbol 0 or a symbol 1 according to said digital baseband signal from said transmitter by a receiver: if k>1, a level of a waveform is higher or lower than a predetermined threshold, and a duration of the level of the waveform exceeds T, a corresponding symbol is 1, wherein τ<T<kτ; otherwise a corresponding symbol is 0, andif 0<k<1, a level of a waveform is higher or lower than said predetermined threshold, and a duration of the level of the waveform exceeds T′, a corresponding symbol is 0, wherein kτ<T′<τ; otherwise a corresponding symbol is 1. | ||
| 地址 | Wuhan, Hubei CN | ||