The following publications are possibly variants of this publication:
- Spatial spectrum holes for cognitive radio with relay-assisted directional transmissionGuodong Zhao, Jun Ma, Ye (Geoffrey) Li, Tao Wu, Young Hoon Kwon, Anthony C. K. Soong, Chenyang Yang. TWC, 8(10):5270-5279, 2009. [doi]
- Spatial Spectrum Holes in Cognitive Radio with Relay TransmissionGuodong Zhao, Jun Ma, Geoffrey Ye Li, Anthony C. K. Soong, Chenyang Yang. vtc 2009: [doi]
- Angle-Domain Spectrum Holes Analysis with Directional Antenna in Cognitive Radio NetworkYadong Zhao, Zhiqing Wei, Yunfeng Liu, Qixun Zhang, Zhiyong Feng. wcnc 2017: 1-6 [doi]
- Proactive Detection of Spectrum Holes in Cognitive RadioGuodong Zhao, Ye (Geoffrey) Li, Chenyang Yang, Jun Ma. icc 2009: 1-5 [doi]