Target Detection Performance of Spectrum Sharing MIMO Radars

Abstract

The demand for spectrum usage is increased which requires new spectrum allotments. For the coexistence of wireless system with the radar systems a dynamic allocation of spectrum method is proposed along with the noise power the communication system power is considered as interference power to the radar system. The communication power effect on radar system as a function of distance is analysed .A multiple input multiple output radar system and MIMO wireless communication system with K base stations are considered. The communication system transmit covariance matrix is designed based on the radar sampling scheme to reduce the effective interference power (EIP) for radar receiver by certain average capacity and transmit power maintained for communication system

Joint Radar and Communication Design: Applications, State-of-the-Art, and the Road Ahead

“…3) Closed-form precoder design After estimating the interference channel, the precoder can be designed at either the radar or the communication's side. Similar to the zero-forcing (ZF) precoding of classic MIMO communication, a simple idea is the so-called null-space projection (NSP) [62], which typically requires the radar to have the knowledge of the ICSI. In the NSP scheme, the radar firstly obtains the right singular vectors of the interference channel matrix by singular value decomposition (SVD), and then constructs an NSP precoder relying on those vectors associated with the null space of the channel.…”

“…Remark 2: There might also exist targets that are neither significant scatterers in the communication channel nor of any interest to the DFRC BS. For notational convenience and following most of the seminal literature in the area [59], [62], [64], [66], [68], [98], we will not discuss such targets in detail and simply incorporate the generated interference in the noise term.…”

MIMO Radar and Cellular Coexistence: A Power-Efficient Approach Enabled by Interference Exploitation

“…Constraints (16) and (17), (18) where P T is given by (11). It should be highlighted that, while here we focus on PSK constellations, the optimizations P 3 onwards can be readily adapted to QAM modulations [29], [35].…”

“…2) Following the typical assumptions in the radarcommunication literature [10], [11], [14], we assume that…”

“…4) In the radar signal model, it is assumed that the communication interference is the only interference received by radar. Following the closely related literature, the interference caused by clutter and false targets is not considered [11]. 5) The duration of the radar sub-pulse is assumed to be the same as the communication symbol duration.…”