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Transmit power reduction by adapting rate or power for single carrier wireless systems

Mohammadnia Avval, M ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1109/.2006.1629396
  3. Publisher: 2006
  4. Abstract:
  5. Adaptive modulation with the goal of minimizing the average transmit power is investigated. This is the dual problem of the well-known problem of maximizing the average spectral efficiency. This is desirable in power limited systems such as mobile and sensor networks. Two main cases are considered: adapting only transmit power and adapting only rate. Appropriate expressions for rate or power control policies are derived for different cases. For rate adaptation, we consider both continuous and discrete rate policies. Then, we will apply these methods to a special case of M-QAM modulation over Rayleigh fading channel. We will show that by using rate or power adaptation schemes, between 7dB and 18dB power gain can be saved over nonadaptive methods for typical values of spectral efficiency. ©2006 IEEE
  6. Keywords:
  7. Carrier communication ; Power transmission ; Problem solving ; Rayleigh fading ; Sensor data fusion ; Wireless telecommunication systems ; Adaptive modulation ; Power control policies ; Rayleigh fading channels ; Sensor networks ; Energy utilization
  8. Source: 25th IEEE International Performance, Computing, and Communications Conference, 2006, IPCCC 2006, Phoenix, AZ, 10 April 2006 through 12 April 2006 ; Volume 2006 , 2006 , Pages 103-109 ; 1424401976 (ISBN); 9781424401970 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/1629396