Power levels and packet lengths in random multiple access

This paper extends our earlier results. We assume that the receiver has the capability of capturing multiple packets so long as the signal-to-interference-plus-noise ratio (SINR) of each packet is above a designed threshold throughout its transmission period. We prove that, compared with a multiple-power-level system, the single-power-level system in which all nodes transmit at the maximum allowable power level achieves optimal throughput, under a condition that exceeds the value 3 33. Given a minimum throughput requirement, under the same condition on , the single-power-level system also achieves the maximum average packet capture probability as well as the optimum energy usage efficiency. If the multiple-power-level systems are constrained such that higher power levels always have shorter packet lengths, then the above results hold for greater than 2.

• Type: Journal
• Year: 2002
• Where: TIT
• Authors: Wei Luo, Anthony Ephremides
• Keywords: Maximum Allowable Power, Minimum Throughput Requirement, Power Levels, TIT 2002