Controlling Initial and Final Radii to Achieve a Low-Complexity Sphere Decoding Technique in MIMO Channels

Figure 4

The average number of flops versus initial radius of SE-SD algorithm when 𝑃=4 and 𝑀=64. (a) 𝜎²=0.203(𝜌=18.4dB), (b) 𝜎²=0.056(𝜌=24dB), and (c) 𝜎²=0.014(𝜌=30dB).

(a)

(b)

(c)