Fig 8. Trade-off in energy efficiency reduction.

(A) Energy efficiency reduction by burst and synchronization in binary scenario; (B) Energy efficiency reduction is minimal in the critical region in both binary and analog scenarios; r = 0 for (A, B). (C) Comparison of simulated energy efficiency η_sim with the upper bound η_opt at various states for various r. The optimum is represented by solid lines and the simulated by symbols. (D) η_opt − η_sim vs. r in both binary (open circles) and analog (solid points) scenarios. Energy efficiency reduction keeps minimal in the critical region at various r in both scenarios. (C, D) Parameters (τ_{d_e}, τ_{d_i}) are indicated in Fig 6A and 6B with corresponding symbols; n = 40 for all patterns.