| 摘要 |
596030 Disclosed is a method for uplink transmission. The method includes determining a channel loss that occurs along a communication channel between an access point and a tag. The method also includes determining an uplink spreading factor based at least in part on the channel loss and at least in part on a predetermined power at which the access point is to receive an uplink signal from the tag. The uplink signal comprises a plurality of symbols, and the uplink spreading factor comprises a number of chips per symbol. The method further includes spreading the uplink signal with the uplink spreading factor and transmitting the uplink signal from the tag to the access point. Systems and tags for performing this method are also disclosed. |
