Wireless transceiver with reduced transmit emissions
US9178539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0066
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for reducing transmit emissions are described herein. The transmit out of band emissions in an adjacent band can be reduced while complying with existing wireless communication standards through utilization of one or more of reduced transmit bandwidth, transmit operating band offset, and channel index remapping. The transceiver can support a receive operating band substantially adjacent to a band edge. The transmit operating band can be offset from an adjacent frequency band, and can use a narrower operating band than is supported by the receiver. The transmit baseband signal can have a reduced bandwidth to reduce the amount of noise. The frequency offset can introduce a larger transition band between the transmit operating band edges and the adjacent frequency band of interest. The transceiver can remap channel assignments to compensate for the frequency offset such that the frequency offset introduced in the transmitter is transparent to channel allocation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.