WIRELESS DEVICE AND METHOD FOR LOW POWER AND LOW DATA RATE OPERATION
First Claim
1. A wireless device for transmitting a packet comprising one or more orthogonal frequency division multiplexed (OFDM) transmission symbols, the wireless device configured to:
- map data to active tones and map zeroes to nulled tones of a set of OFDM tones to generate an OFDM symbol comprising both the active and the nulled tones, the number of active and nulled tones being based on a nulling factor; and
generate an OFDM transmission symbol for transmission over a transmission bandwidth.
2 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of a wireless device and method for transmitting a packet comprising one or more orthogonal frequency division multiplexed (OFDM) transmission symbols are generally described herein. In some embodiments, the wireless device may be configured to map data to active tones and map zeroes to nulled tones of a set of OFDM tones to generate an OFDM symbol comprising both the active and the nulled tones. The number of active and nulled tones may be based on a nulling factor. The OFDM symbol may be down-clocked to generate an OFDM transmission symbol for transmission over a reduced transmission bandwidth. Accordingly, low power may be used for very low data rate transmissions, which may be suitable for sensor devices.
-
Citations
23 Claims
-
1. A wireless device for transmitting a packet comprising one or more orthogonal frequency division multiplexed (OFDM) transmission symbols, the wireless device configured to:
-
map data to active tones and map zeroes to nulled tones of a set of OFDM tones to generate an OFDM symbol comprising both the active and the nulled tones, the number of active and nulled tones being based on a nulling factor; and generate an OFDM transmission symbol for transmission over a transmission bandwidth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for transmitting one or more orthogonal frequency division multiplexed (OFDM) transmission symbols, the method comprising:
-
maping data to active tones and mapping zeroes to nulled tones of a set of OFDM tones to generate an OFDM symbol comprising both the active and the nulled tones, the number of active and nulled tones being based on a nulling factor; and down-clocking the OFDM symbol to generate an OFDM transmission symbol for transmission over a reduced transmission bandwidth. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A sensor device configured to operate on battery power and configured to transmit sensor data comprising one or more orthogonal frequency division multiplexed (OFDM) transmission symbols, the sensor device configured to:
-
map data to active tones and map zeroes to nulled tones of a set of OFDM tones to generate an OFDM symbol comprising both the active and the nulled tones, the number of active and nulled tones being based on a nulling factor; and down-clock the OFDM symbol to generate a multicarrier OFDM transmission symbol for transmission over a reduced transmission bandwidth. - View Dependent Claims (21, 22, 23)
-
Specification