Title :
Power levels and packet lengths in random multiple access
Author :
Luo, Wei ; Ephremides, Anthony
Author_Institution :
Lucent Technol. Bell Labs, Holmdel, NJ, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
Multiple-power-level ALOHA has been proposed to take advantage of the capture phenomenon in order to improve the throughput of a multiple random access system. We study the effect of the use of multiple transmission power levels and of the corresponding packet lengths on the system throughput and energy efficiency. We prove that the single-power-level system in which all transmit at the maximum allowable power level achieves both optimal throughput and energy usage efficiency under a condition on the decodability threshold value
Keywords :
access protocols; decoding; multi-access systems; packet radio networks; random processes; Shannon theory; capture phenomenon; channel capacity; decodability threshold value; energy efficiency; maximum allowable power level; multiple power level ALOHA; multiple random access system; optimal energy usage efficiency; optimal throughput; optimistic model; packet peak power constraint; single power level system; single-receiver ALOHA system; system average power constraint; system throughput; uniform packet length; wireless networks; Bandwidth; Cellular networks; Control systems; Decoding; Energy capture; Energy efficiency; Power system modeling; Signal to noise ratio; Throughput; Wireless networks;
Journal_Title :
Information Theory, IEEE Transactions on
