Transmit Signal Design in Colocated MIMO Radar Without Covariance Matrix Optimization

A Coordinate Descent Framework to Joint Design of MPSK Sequences and Receive Filter Weights in MIMO Radar Systems

“…The method in [10], [13] are chosen as the benchmarks and the conventional phased array with similar physical array as to the MIMO, equipped with MVDR beamformer is adopted for the comparison purposes.…”

“…The SINR values obtained via the proposed algorithm in comparison with the benchmarks and phased array radar system is depicted in Figure 2. We assume that a target is located at θ 0 = 0 • with SNR = 20dB, when 6 signal dependent interferences are located at ) is neighboring to the unconstrained method in [13], indicating the superiority of the proposed algorithm. Also, with the proposed method, the SINR values are kept almost fixed while the number of interference is increasing.…”

“…Recently, several papers focused on sequential optimization, to directly design transmit signal and the receive filter, achieving significant improvements in output SINR (see [9], [11], [13], and references therein). In [9], it is shown that MIMO radar systems can surpass the interferences with high level of accuracy and achieve high 1. RFPAs have nonlinear relationships between their input and output and they cannot have maximum power efficiency at all power levels [10].…”

“…output SINR in comparison with the phased array counterpart. Finally, in [13] transmit orthogonal waveforms are obtained by linearly combining a set of orthogonal sequences, achieving a comparable SINR with the nonorthogonal sequences.…”

“…Comparison of degrees of freedom in interference suppression for proposed Continuous and discrete phase algorithm with phased-array, unconstrained MIMO radar in[13] and[10],N T = N R = 4, θ 0 = 0, SNR = 20dB, θ j = −19 • , 31 • , 44 • , −38 • ,59 • , −64 • , INR = 30dB, N = 16 and L = 4, 16. −19 • , 31 • , 44 • , −38 • , 59 • and −64 • with INR =30 dB.…”