Figure 2From: Performance of distributed beamforming for dense relay deployments in the presence of limited feedback information Amplitude of different weighting factor W k (σ 1 ,σ 2 ) ’s. They are used to approximate the PDF/CDF of the received SNR γ[i] as a weighted sum of non-central χ 2PDFs/CDFs with different degrees of freedom. Channel phase resolutions (bit/RS): N = 1 (o), N = 2 (∙), and N = 3 (+).Back to article page