主要研究方向包括空天地一体化网络安全、无线宽带自组织网络、无人机通信、物联网等领域。发表学术论文百余篇，著有Springer出版社英文专著两部、人民邮电出版社中文专著三部。主持国家自然科学基金联合重点、优秀青年科学基金、北京市自然科学基金杰出青年科学基金、国家重点研发计划课题。获中国出版政府奖、国家科技进步二等奖、中国电子学会自然科学一等奖、中国指挥与控制学会科技进步一等奖、中国电子学会自然科学二等奖、茅以升北京青年科技奖。担任政协北京市第十四届委员会委员、中国科学技术协会第十次全国代表大会代表、北京市科学技术协会人才工作专门委员会委员、中国指挥与控制学会理事、中国通信学会青年工作委员会委员、中国通信学会期刊与出版工作委员会委员、IEEE Transactions on Wireless Communications、IEEE Transactions on Mobile Computing、IEEE Transactions on Signal Processing、IEEE Wireless Communications Letters等期刊编委、Journal of Communications and Information Networks执行编委，入选IEEE通信学会、车辆技术学会杰出演讲者。 英文专著: 1. Lin Bai, Jinho Choi, and Quan Yu, Low Complexity MIMO Receivers, Springer, New York, 2014, ISBN-13: 978-3319049830/ ISBN-10: 3319049836. 2. Lin Bai and Jinho Choi, Low Complexity MIMO Detection, Springer, New York, 2012, ISBN-13: 978-1-4419-8582-8/ e-ISBN: 978-1-4419-8583-5.  中文专著: 1. 白琳,李敏,李颖,于全.空间信号协同处理理论与技术，中国人民邮电出版社，2017. 2. 白琳,梁仙灵,肖振宇,金荣洪,于全.空间多维协同传输理论与关键技术，中国人民邮电出版社，2015.（荣获第四届中国出版政府奖） 3. 白琳,李颖,黄勤飞,董旭,于全.空间信号组合理论与关键技术，中国人民邮电出版社，2013.  代表论文：
1. L. Bai, H. Cao, T. Bai, and C. He, “1-Bit programmable metasurface-based 2-D direction finding,” IEEE Antennas and Wireless Propagation Letters, vol. 22, no. 9, pp. 2160-2164, Sept. 2023. 2. R. Han, J. Liu, L. Bai, and J. Liu, “Epidemic theory-inspired integrated sensing and communication networks: design and analysis,” IEEE Communications Magazine, vol. 61, no. 5, pp. 33-39, May 2023. 3. L. Bai, Z. Wu, and L. Zhou, "Achievable refined asymptotics for successive refinement using Gaussian codebooks," IEEE Transactions on Information Theory, vol. 69, no. 6, pp. 3525-3543, June 2023. 4. L. Bai, J. Xu, and L. Zhou, “Covert communication for spatially sparse mmwave massive MIMO channels,” IEEE Transactions on Communications, vol. 71, no. 3, pp. 1615-1630, March 2023. 5. J. Wang, L. Bai, J. Chen, and J. Wang, “Starling flocks-inspired resource allocation for ISAC-aided green ad hoc networks,” IEEE Transactions on Green Communications and Networking, vol. 7, no. 1, pp. 444-454, March 2023. 6. L. Chai, L. Bai, T. Bai, J. Choi, and W. Zhang, “RIS-aided SCMA-based SWIPT systems: design and optimization,” IEEE Transactions on Vehicular Technology, vol. 72, no. 5, pp. 6238-6252, May 2023. 7. L. Zhu, L. Bai, L. Zhou, and J. Choi, “Efficient user scheduling for uplink hybrid satellite-terrestrial communication,” IEEE Transactions on Wireless Communications, vol. 22, no. 5, pp. 1885-1899, March 2023. 8. J. Xu, X. Cheng, and L. Bai, “A 3-D space-time-frequency non-stationary model for low-altitude UAV mmWave and massive MIMO aerial fading channels,” IEEE Transactions on Antennas and Propagation, vol. 70, no. 11, pp. 10936-10950, November 2022. 9. C. Han, L. Bai, T. Bai, and J. Choi, “Joint UAV deployment and power allocation for secure space-air-ground communications,” IEEE Transactions on Communications, vol. 70, no. 10, pp. 6804-6818, October 2022. 10. L. Bai, Q. Chen, T. Bai, and J. Wang, “UAV-enabled secure multi-user backscatter communications with planar array,” IEEE Journal on Selected Areas in Communications, vol. 40, no. 10, pp. 2946-2961, October 2022. 11. L. Bai, J. Diao, and L. Zhou, “Achievable error exponents for almost fixed-length binary classification,” in Proc. IEEE International Symposium on Information Theory (ISIT), June 2022, pp. 1336-1341. 12. Z. Wu, L. Bai, and L. Zhou, “Excess-distortion exponents for successive refinement using Gaussian codebooks,” in Proc. IEEE International Symposium on Information Theory (ISIT), June 2022, pp. 234-239. 13. L. Zhou, L. Bai, and A. Hero, “Resolution limits of non-adaptive 20 questions search for multiple targets”, IEEE Transactions on Information Theory, vol. 69, no. 8, pp. 4964-4982, August 2022. 14. L. Bai, J. Liu, R. Han, and W. Zhang, “Wireless radar sensor networks: epidemiological modeling and optimization,” IEEE Journal on Selected Areas in Communications, vol. 40, no. 6, pp. 1993-2005, June 2022. 15. L. Chai, Z. Liu, P. Xiao, A. Maaref, and L. Bai, “An improved EPA-based receiver design for uplink LDPC coded SCMA system,” IEEE Wireless Communications Letters, vol. 11, no. 5, pp. 947-951, May 2022. 16. L. Bai, J. Liu, J. Wang, R. Han, and J. Choi, “Data aggregation in UAV-aided random access for the Internet of Vehicles,” IEEE Internet of Things Journal, vol. 9, no. 8, pp. 5755-5764, April 2022. 17. R. Han, L. Bai, W. Zhang, J. Liu, J. Choi, and W. Zhang, “Variational inference based sparse signal detection for next generation multiple access,” IEEE Journal on Selected Areas in Communications, vol. 40, no. 4, pp. 1114-1127, April 2022. 18. R. Han, Y. Wen, L. Bai, J. Liu, and J. Choi, “Age of information aware UAV deployment for intelligent transportation systems,” IEEE Transactions on Intelligent Transportation Systems, vol. 23, no. 3, pp. 2705-2715, March 2022. 19. R. Han, L. Bai, J. Liu, J. Choi, and Y. -C. Liang, “A secure structure for UAV-aided IoT networks: space-time Key,” IEEE Wireless Communications, vol. 28, no. 5, pp. 96-101, October 2021. 20. R. Han, L. Bai, C. Jiang, J. Liu, and J. Choi, “A secure architecture of relay-aided space information networks,” IEEE Network, vol. 35, no. 4, pp. 88-94, July/August 2021. 21. L. Bai, Z. Wu, and L. Zhou, “Achievable second-order asymptotics for successive refinement using Gaussian codebooks,” in Proc. IEEE International Symposium on Information Theory (ISIT), July 2021, pp. 2888-2893. 22. Q. Chen, L. Bai, C. He, and R. Jin, “On the harmonic selection and performance verification in time-modulated array-based space division multiple access,” IEEE Transactions on Antennas and Propagation, vol. 69, no. 6, pp. 3244-3256, June 2021. 23. R. Han, L. Bai, Y. Wen, J. Liu, J. Choi, and W. Zhang, “UAV-aided backscatter communications: performance analysis and trajectory optimization,” IEEE Journal on Selected Areas in Communications, vol. 39, no. 10, pp. 3129-3143, June 2021. 24. J. Wang, R. Han, L. Bai, T. Zhang, J. Liu, and J. Choi, “Coordinated beamforming for UAV-aided millimeter-wave communications using GPML-based channel estimation,” IEEE Transactions on Cognitive Communications and Networking, vol. 7, no. 1, pp. 101-109, March 2021. 25. L. Bai, J. Liu, Q. Yu, J. Choi, and W. Zhang, “A collision resolution protocol for random access in massive MIMO,” IEEE Journal on Selected Areas in Communications, vol. 39, no. 3, pp. 686-699, March 2021. 26. R. Han, J. Wang, L. Bai, J. Liu, and J. Choi, “Age of information and performance analysis for UAV-aided IoT systems,” IEEE Internet of Things Journal, vol. 8, no. 9, pp. 14447-14457, January 2021. 27. L. Bai, R. Han, J. Liu, J. Choi, and W. Zhang, “Relay-aided random access in space-air-ground integrated networks,” IEEE Wireless Communications, vol. 27, no. 6, pp. 37-43, December 2020. 28. L. Bai, J. Wang, R. Han, D. Li, J. Liu, and J. Choi, “A precoding compensation scheme for heterogeneous communication networks with CSI feedback delay,” IEEE Transactions on Network Science and Engineering, vol. 7, no. 4, pp. 2506-2514, December 2020. 29. R. Han, Y. Wen, L. Bai, J. Liu, and J. Choi, “Rate splitting on mobile edge computing for UAV-aided IoT systems,” IEEE Transactions on Cognitive Communications and Networking, vol. 6, no. 4, pp. 1193-1203, December 2020. 30. L. Bai, R. Han, J. Liu, Q. Yu, J. Choi, and W. Zhang, “Air-to-Ground Wireless Links for High-Speed UAVs,” IEEE Journal on Selected Areas in Communications, vol. 38, no.12, pp. 2918-2930, December 2020. 31. L. Bai, R. Han, J. Liu, J. Choi, and W. Zhang, “Random access and detection performance of Internet of Things for smart ocean,” IEEE Internet of Things Journal, vol.7, no. 10, pp.9858-9869, October 2020. 32. J. Wang, J. Yi, R. Han, L. Bai, and J. Choi, “Variational bayesian inference for channel estimation and user activity detection in C-RAN,” IEEE Wireless Communications Letters, vol. 9, no. 7, pp. 953-956, July 2020. 33. R. Han, L. Bai, J. Yi, J. Liu, and J. Choi, “Multiple delay estimation using genetic algorithm based MCMC in non-orthogonal random access,” IEEE Wireless Communications Letters, vol. 9, no. 3, pp. 398-401, March 2020. 34. Z. Xiao, H. Dong, L. Bai, D. Wu, and X. G. Xia, “Unmanned aerial vehicle base station (UAV-BS) deployment with millimeter-wave beamforming,” IEEE Internet of Things Journal, vol. 7, no. 2, pp. 1336-1349, February 2020. 35. L. Bai, R. Han, J. Liu, J. Choi, and W. Zhang, “Multiple delay estimation for collision resolution in non-orthogonal random access”, IEEE Transactions on Vehicular Technology, vol. 69, no. 1, pp. 497-508, January 2020. 36. Q. Zhou, Y. Ma, L. Bai, J. Choi, and Y. C. Liang, “Relay-aided multiple access scheme in two-point joint transmission,” IEEE Transactions on Vehicular Technology, vol. 68, no. 6, pp. 5629-5641, June 2019. 37. L. Bai, L. Zhu, Q. Yu, J. Choi, and W. Zhuang, “Transmit power minimization for vector-perturbation based NOMA systems: a sub-optimal beamforming approach,” IEEE Transactions on Wireless Communications, vol. 18, no. 5, pp. 2679-2692, March 2019. 38. L. Bai, T. Li, Q. Yu, J. Choi, and W. Zhang, “Cooperative multiuser beamforming in mmWave distributed antenna systems,” IEEE Transactions on Vehicular Technology, vol. 67, no. 12, pp. 12394-12397, October 2018. 39. L. Bai, L. Zhu, X. Zhang, W. Zhang, and Q. Yu, “Multi-satellite relay transmission in 5G: Concepts, techniques, and challenges,” IEEE Network, vol. 32, no. 5, pp. 38-44, September/October 2018. 40. Z. Xiao, H. Dong, L. Bai, P. Xia, and X. G. Xia, “Enhanced channel estimation and codebook design for millimeter-wave communication,” IEEE Transactions on Vehicular Technology, vol. 67, no. 10, pp. 9393-9405, October 2018. 41. Q. Yu, C. Han, L. Bai, J. Choi, and X. Shen, “Low-complexity multiuser detection in millimeter-wave systems based on opportunistic hybrid beamforming,” IEEE Transactions on Vehicular Technology, vol. 67, no. 10, pp. 10129-10133, October 2018. 42. L. Bai, L. Zhu, T. Li, J. Choi, and W. Zhuang, “An efficient hybrid transmission method: Using nonorthogonal multiple access and multiuser diversity,” IEEE Transactions on Vehicular Technology, vol. 67, no. 3, pp. 2276-2288, March 2018. 43. M. Li, L. Bai, Q. Yu, and J. Choi, “Optimal beamforming for dual-hop MIMO AF relay networks with cochannel interferences,” IEEE Transactions on Signal Processing, vol. 65, no. 7, pp. 1825-1840, April 2017. 44. Z. Xiao, Y. Li, L. Bai, and J. Choi, “Achievable sum rates of half- and full-duplex bidirectional OFDM communication links,” IEEE Transactions on Vehicular Technology, vol. 66, no. 2, pp. 1351-1364, February 2017. 45. L. Bai, T. Li, J. Liu, and J. Choi, “Large-scale MIMO detection using MCMC approach with blockwise sampling,” IEEE Transactions on Communications, vol. 64, no. 9, pp. 3697-3707, September 2016. 46. C. Chen, L. Bai, Y. Yang, and J. Choi, “Error performance of physical-layer network coding in multiple-antenna two-way relay systems with outdated CSI,” IEEE Transactions on Communications, vol. 63, no. 10, pp. 3744-3753, October 2015. 47. Q. Li, J. Zhang, L. Bai, and J. Choi, “Performance analysis and system design for hierarchical modulated BICM-ID,” IEEE Transactions on Wireless Communications, vol. 13, no. 6, pp. 3056-3069, May 2014. 48. Q. Li, J. Zhang, L. Bai, and J. Choi, “Lattice reduction-based approximate MAP detection with bit-wise combining and integer perturbed list generation,” IEEE Transactions on Communications, vol. 61, no. 8, pp. 3259-3269, August 2013. 49. L. Bai and J. Choi, “Lattice reduction-based MIMO iterative receiver using randomized sampling,” IEEE Transactions on Wireless Communications, vol. 12, no. 5, pp. 2160-2170, May 2013. 50. L. Bai, C. Chen, J. Choi, and C. Ling, “Greedy user selection using a lattice reduction updating method for multiuser MIMO systems,” IEEE Transactions on Vehicular Technology, vol. 60, no. 1, pp. 136-147, January 2011. 51. L. Bai and J. Choi, “Partial MAP-based list detection for MIMO systems,” IEEE Transactions on Vehicular Technology, vol. 58, no. 5, pp. 2544-2548, June 2009.
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