Bargaining in a Dual Radar and Communication System Using Radar-Prioritized OFDM Waveforms

摘要

This paper examines a dual radar/communication system employing OFDM style waveforms with two objectives: a radar task involving target tracking, and a communication task involving communicating with a distant receiver. One challenge with such two objective problems is that the optimal solution for one of objective could be non-optimal for the other. We examine the problem of resolving dual radar/communication objectives and solve the associated two objective problem in two steps: First, for each fixed level of performance for the radar's objective, the optimal solution is found in a water-filling form which includes the classical OFDM waterfilling solution as a boundary case. The formulation returns a continuum of optimal solutions (a solution per radar performance level). Second, from this continuum of solutions, we find the Nash bargaining solution, which returns the best tradeoff between the two objectives, and an algorithm to find the Nash bargaining solution is presented.