Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Maximizing power and spectral efficiencies for layered and conventional modulations










Image Number 19 for United States Patent #8130818.

Methods and apparatuses for maximizing power and spectral efficiencies in a wireless communication system are disclosed. The invention is particularly useful for layered modulation applications because power levels for such applications are relatively high. A layered modulation signal comprises an upper and a lower layer signal that interfere with each other within the same frequency band such that the upper layer signal can be demodulated directly from the layered modulation signal, and the lower layer signal can be demodulated after subtracting the first layer signal from the layered modulation signal. The invention applies one or more of the following four signal schemes in a communication signal including varying the symbol rate (rather than the code rate), reducing or eliminating the guard band, reducing excess signal bandwidth and employing layered modulation within the guard band of the legacy signal.








 
 
  Recently Added Patents
Picture quality control method and image display using same
Mobile camera localization using depth maps
Soybean cultivar CL1013675
Image forming apparatus and method
Music composition automation including song structure
Method of providing user-tailored entertainment experience at hospitality location and hospitality media system thereof
Systems and methods for programming an RFID reader
  Randomly Featured Patents
Node storage, deployment and retrieval system
Punch assembly with improved disassembly features
Method and apparatus for analyzing a swimmer's swim stroke
Orthopaedic fixing system
Adjustable guide assembly for stone masons and method of use thereof
License plate mounted accessory
Low EMI emissions heat sink device
Method of simulation time travel in a card game
Display device and method for driving display device
Electronic fuel injection system for internal combustion engine