Sparse Representation Based Range-Doppler Processing for Integrated OFDM Radar-Communication Networks

Abstract EN

In an integrated radar-communication network, multiuser access techniques with minimal performance degradation and without range-Doppler ambiguities are required, especially in a dense user environment.

In this paper, a multiuser access scheme with random subcarrier allocation mechanism is proposed for orthogonal frequency division multiplexing (OFDM) based integrated radar-communication networks.

The expression of modulation Symbol-Domain method combined with sparse representation (SR) for range-Doppler estimation is introduced and a parallel reconstruction algorithm is employed.

The radar target detection performance is improved with less spectrum occupation.

Additionally, a Doppler frequency detector is exploited to decrease the computational complexity.

Numerical simulations show that the proposed method outperforms the traditional modulation Symbol-Domain method under ideal and realistic nonideal scenarios.