Joint Optimization of the Spectral Coexistence of Radar and Communications System

Joint waveform and precoding design for coexistence of MIMO radar and MU‐MISO communication

“…As a representative configuration, the joint radarcommunication (JRC) has attracted great attention in recent years [3-10], which shares the frequency and other resources between radar and communication. Based on whether both radar and communication share the same transmit platform, most of the current JRC systems can be roughly classified into two categories, that is, dual-function radar-communication (DFRC) [11][12][13][14][15][16][17][18][19] and coexistence of radar and communication [20][21][22][23][24][25][26][27][28][29].…”

“…For the coexistence scheme, radar and communication systems operate independently with their own set of separate waveforms [5,[20][21][22][23][24][25][26][27][28][29]. Compared with DFRC, the coexistence structure shows the flexibility in transmitter deployment and waveform design.…”

“…As a representative configuration, the joint radarcommunication (JRC) has attracted great attention in recent years [3-10], which shares the frequency and other resources between radar and communication. Based on whether both radar and communication share the same transmit platform, most of the current JRC systems can be roughly classified into two categories, that is, dual-function radar-communication (DFRC) [11][12][13][14][15][16][17][18][19] and coexistence of radar and communication [20][21][22][23][24][25][26][27][28][29].With regards to the DFRC, the dual-function base-station (DFBS) emits a set of waveform to illuminate the target and communicate to the users simultaneously [11][12][13][14][15][16][17][18][30][31][32][33]. Meanwhile, the corresponding radar and communication receivers can process the received signal and hence further extract the related system parameters [13,16].…”

Novel Cooperative Scheme Based on Joint Band Assignment and Power Allocation for a Coexisting Radar-Communications System

“…Additionally, several sparse array configurations are developed in [ 24 , 25 ], where two simultaneous beamformers for different functions are implemented by antenna selection. On the other hand, the works in [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ] target power allocation strategies to improve the spectrum efficiency of the CRC system. In [ 26 ], the authors formulate a problem to maximize the radar SINR with the constraints of transmit power and downlink communication rate.…”

“…As an extension, the studies in [ 28 ] consider the transmit beampattern design in perfect and imperfect channel state information (CSI) cases. Similarly, joint designs of communication code-book and radar waveform/received filter are developed to maximize the SINR and MI in [ 29 , 30 , 31 ], respectively. Different from the aforementioned works, the authors in [ 32 ] study a robust OFDM waveform optimization in signal-dependent clutters under the condition of uncertainty target spectra, whereas the communication signals backscattered off the targets at the radar receiver can be ignored or viewed as interference and even useful energy based on the prior knowledge of the communication signals, the target spectra, and the propagation loss of the channels.…”