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Optimal power control for discrete-rate link adaptation schemes with capacity-approaching coding
By: Gjendemsjo, A.; Holm, H.; Oien, G.E.;
2005 / IEEE / 0-7803-9414-3
Description
This item was taken from the IEEE Conference ' Optimal power control for discrete-rate link adaptation schemes with capacity-approaching coding ' In wireless communications, bandwidth is a scarce resource. By employing link adaptation we achieve bandwidth-efficient wireless transmission schemes. We propose a variable-power transmission scheme for slowly varying flat-fading channels using a fixed number of codes. Assuming that capacity-achieving codes for AWGN channels are available, the proposed power adaptation scheme maximizes the average spectral efficiency (ASE) for any finite number N of available rates. We show that the power adapted transmission scheme, using just four different rates, achieves a spectral efficiency within 0.15 bits/s/Hz of the Shannon capacity for continuous rate and power adaptation. Further, when restricted to N optimally chosen rates, introducing power adaptation has significant ASE and outage probability gains over a constant power scheme.
Related Topics
Bandwidth-efficient Wireless Transmission Scheme
Variable-power Transmission Scheme
Flat-fading Channels
Capacity-achieving Codes
Awgn Channels
Power Adaptation Scheme
Average Spectral Efficiency
Shannon Capacity
Power Adaptation
Power Control
Bit Error Rate
Awgn Channels
Fading
Modulation Coding
Adaptive Systems
Wireless Communication
Digital Video Broadcasting
Transmitters
Programmable Control
Engineering
Telecommunication Congestion Control
Awgn Channels
Channel Capacity
Channel Coding
Fading Channels
Power Control
Radio Links
Radio Networks
Outage Probability Gains
Link Adaptation
Wireless Communications
Optimal Power Control
Discrete-rate Link Adaptation Schemes
Capacity-approaching Coding