Xiao Liang

Learn More
—Interference alignment can help achieve high capacity in multiuser and multi-channel wireless interference environments. Because the degree of freedom (DOF) metric is defined under asymptotic signal to noise ratio (SNR), it has practical limitations under finite SNR. In addition, perfect interference alignment requires conditions on the number of antennas(More)
—Our investigation centers on the issue of linear precoding for hybrid-ARQ retransmissions in linear multi-input-multi-output (MIMO) channels driven by non-Gaussian inputs. Leveraging recent works on single transmission MIMO precoding [1], we derive the gradient of input-output mutual information with respect to precoder matrix for optimization. We further(More)
  • 1