A New Iterative Approach in SINR Improvement of MIMO Radars by Using Combination of Orthogonal Waveforms

Interference cancellation in co‐located MIMO radars using waveform optimisation in signal dependent clutter

“…11 depicts that our proposed methods are more faster, when the number of samples in each transmit waveform increases and therefore, our proposed algorithms are more useful in practice. The obtained SINR for both our proposed methods, method in [17] and method in [18] are 19.85, 19.8, 19.85 and , respectively.…”

“…It should be noticed that, as real‐time design of transmit waveforms is crucial in radar systems, changing the order of these filters in our proposed method in this paper, makes the required design time be independent from the number of transmit waveform symbols. As shown in the simulation results, our proposed method design time is almost fixed and is always lower than that of [18].…”

“…This means that the transmitted waveform of each antenna is phased shifted copy of the orthogonal waveform set. In this way, the practical implementation of the waveform design method would be easier than that of the first one and methods proposed in [18]. From SINR performance point of view, both methods have almost similar performances.…”

“…In such radars by using waveform design, we can manage transmit and receive power patterns. Therefore, one of the interesting subjects of the MIMO radar terminology is waveform design concept [7–21].…”

“…In both of our proposed methods, orthogonal waveforms are first combined using combining matrix . In the receiver side, unlike the proposed method in [18] in which the received signal first passes through the spatial beam‐forming filter and then passes through the matched filter, the received signal first passes through the matched filter of orthogonal waveforms and their outputs are then passed through a spatial beam‐forming filter. In this case, the receiver spatial filter is independent from received waveform symbols and is just related to the number of matched filter outputs.…”