Phase sequences for timing and access signals
US6804191B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2003 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Apr 4, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2613
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for splitting Golay sequences into a plurality of subsets of sequence elements and transmitting the subsets are described. The sequence subsets include an equal number of elements, e.g., symbols, from the split sequence and are transmitted using one group of tones per subset. The tones in each group of tones are uniformly spaced with one symbol being transmitted on each tone. The groups of tones are separated from one another by a frequency spacing which is greater, e.g., many times greater, than the frequency spacing between the tones in each group. Low peak to average power ratios are achieved for the transmitted signals while at the same time allowing for a wide band of frequencies to be used to transmit the split sequence. This leads to greater frequency diversity and facilitates frequency and phase related signal measurements by a device receiving the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.