Mutual information based co-design for coexisting MIMO radar and communication systems

Yuanhao Cui, Visa Koivunen, Xiaojun Jing

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

5 Sitaatiot (Scopus)


In this paper, we focus on the spectrum sharing between a colocated Multiple-Input Multiple-Output (MIMO) radar and MIMO communication system comprised of K users. Aiming to find the maximum data transmission strategy for communication and the optimal information extraction waveform for radar, we jointly maximize the sum-rate of the communication system and the mutual information (MI) between the target impulse response and the target echoes on radar system. The optimal solution is, simultaneously minimizing target parameter estimation error of radar and data estimation error of communication. However, the problem is non-convex and several variables are coupled, hence, the problem is NP-hard. Toward this end, we develop an alternating primal-dual subgradient ascent framework to efficiently find a sub-optimal solution. More specifically, the precoders and radar waveform are found iteratively through subgradient ascent on augmented Lagrange function. An optimal decoder for communication is found in a closed-form using Minimum Mean Square error criterion. To maintain Kronecker structure of radar decoder, it is obtained in a closed form approximation using joint generalized Rayleigh quotient and Kronecker product approximation. The simulation results show that interferences are suppressed efficiently by the jointly designed precoders and decoders. The total mutual information achieves a near linear growth with signal noise ratio increasing, especially in relative high SNR regime.

Otsikko2020 IEEE International Conference on Communications Workshops, ICC Workshops 2020 - Proceedings
ISBN (elektroninen)9781728174402
DOI - pysyväislinkit
TilaJulkaistu - kesäk. 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaIEEE International Conference on Communications Workshops - Dublin, Irlanti
Kesto: 7 kesäk. 202011 kesäk. 2020


ConferenceIEEE International Conference on Communications Workshops
LyhennettäICC Workshops


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