Performance Analysis of Grouped Multilevel Space-Time Trellis Coding Technique Using Cognitive Radio in Different Deployment Models

<div>Partitioning of 16-QAM utilizing (<i>N</i> = 4) way segments and <i>L</i> = 2. (a) Level 1 sets partition into <i>N</i> = 4 subsets (each sets apart with various shaded circles). (b) The weighted sum of the levels 1 (white line) and 2 (grey) 4-QAM points chooses the transmitted 16-QAM point (dark).</div>

Wireless Communications and Mobile Computing

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Figure 5

Figure 5: Performance Analysis of Grouped Multilevel Space-Time Trellis Coding Technique Using Cognitive Radio in Different Deployment Models 