A joint design of transmit waveforms for radar and communications systems in coexistence

“…In [12], information theory is utilized to develop a mutual information measure used for waveform and power spectrum design to jointly optimize the performance of radar and communications systems that overlap in frequency. Similarly, the work presented in [11] also uses information theory to develop an expression for radar capacity (for radar systems performing target detection only) which, in combination with traditional communications capacity, can be used to measure the total capacity of a joint radar-communications network.…”

Section: A Backgroundmentioning

confidence: 99%

Inner Bounds on Performance of Radar and Communications Co-Existence

Chiriyath

Paul

Jacyna

et al. 2016

IEEE Trans. Signal Process.

334

219

View full text Add to dashboard Cite

We investigate methods of co-existence between radar and communications systems. Each system typically considers the other system a source of interference. Consequently, the traditional solution is to isolate the two systems spectrally or spatially. By considering a cooperative radar and communications signaling scheme, we derive achievable bounds on performance for a receiver that observes communications and radar return in the same frequency allocation. We assume the radar and communications operations to be a single joint system. Bounds on performance of the joint system are measured in terms of data information rate for communications and a novel radar estimation information rate for the radar.Index Terms-Performance bounds, radar-communications co-existence. I. INTRODUCTIONT HERE is an ever increasing demand for spectrum and given the limit on resources, communications and radar systems are increasingly encouraged to share bandwidth. This can cause inter-system interference that degrades the performance of both systems. The standard solution is to separate (temporally, spatially or spectrally) the radar and communications systems. In this paper, we do not require this separation, and we explore the fundamental radar and communications co-existence performance bounds. An important contribution that enables this exploration is the novel parameterization of estimation information rate. The estimation information rate incorporates the insights of rate distortion theory but emphasizes the symmetry with the communications bound. In this paper, we refine and extend the performance bounds introduced in [1], as well as the additional bounds discussed in [2]. We also expand the results in [1] in greater detail. The two new inner bounds on performance discussed in this paper are the isolated sub-band inner bound and the optimal Fisher information inner bound.

show abstract

“…In [181], an information theoretic waveform design algorithm is proposed for multiple-input-multipleoutput radars to support coexistence with a communication system. Additionally, a combined mutual information criterion for the joint waveform and power spectrum design is developed in [182] to optimize the performance of the radar and communications systems. The performance is evaluated in terms of the minimum separation distance between the two coexisting systems, under the constraint that SINR requirements in both systems must be satisfied.…”

Section: ) Waveform Design-based Methodsmentioning

confidence: 99%