## 4 Experimental Results
### Effect of GoP Size on the Performance of Proposed JD-TV
\begin{table}
\begin{tabular}{l c c c c c c} \hline \hline  & \multicolumn{6}{c}{**Mother-Daughter**} \\ \hline
**Subrate** & **0.05** & **0.10** & **0.15** & **0.20** & **0.25** & **0.30** \\ \hline
**BCS-TV** & 24.88 & 30.36 & 32.35 & 33.73 & 35.55 & 37.15 \\ \hline
**JD-TV GoP3** & **36.35** & **40.10** & **41.03** & **41.41** & **41.94** & **42.41** \\ \hline
**JD-TV GoP5** & 34.16 & 35.55 & 36.73 & 38.43 & 39.88 & 40.72 \\ \hline
**JD-TV GoP8** & 32.00 & 34.26 & 35.81 & 37.65 & 38.63 & 39.61 \\ \hline \multicolumn{6}{c}{**Hall Monitor**} \\ \cline{2-7}
**Video Sequence** & **0.05** & **0.10** & **0.15** & **0.20** & **0.25** & **0.30** \\ \hline
**BCS-TV** & 21.20 & 23.71 & 25.26 & 26.68 & 28.18 & 29.71 \\ \hline
**JD-TV GoP3** & **32.31** & **32.70** & **33.28** & **33.93** & **34.45** & **35.08** \\ \hline
**JD-TV GoP5** & 29.52 & 31.56 & 32.10 & 32.98 & 33.64 & 34.26 \\ \hline
**JD-TV GoP8** & 28.98 & 30.65 & 31.77 & 32.81 & 33.83 & 34.85 \\ \hline \hline \multicolumn{7}{c}{**Foreman**} \\ \hline
**Subrate** & **0.05** & **0.10** & **0.15** & **0.20** & **0.25** & **0.30** \\ \hline
**BCS-TV** & 23.66 & 25.38 & 27.05 & 29.0 & 30.70 & 33.83 \\ \hline
**JD-TV GoP3** & **29.82** & **31.94** & **32.31** & **33.59** & **34.14** & **35.81** \\ \hline
**JD-TV GoP5** & 26.3 & 29.9 & 31.06 & 32.84 & 33.59 & 35.03 \\ \hline
**Moderate Motion** & **JD-TV GoP8** & 26.29 & 27.86 & 30.05 & 31.42 & 32.96 & 34.61 \\ \hline
**Sequence** & \multicolumn{6}{c}{**Coast Guard**} \\ \hline
**Subrate** & **0.05** & **0.10** & **0.15** & **0.20** & **0.25** & **0.30** \\ \hline
**BCS-TV** & 21.86 & 23.98 & 25.01 & 26.15 & 27.18 & 27.99 \\ \hline
**JD-TV GoP3** & **29.18** & **29.73** & **30.22** & **30.9** & **31.51** & **32.00** \\ \hline
**JD-TV GoP5** & 25.43 & 26.84 & 27.51 & 28.6 & 29.27 & 30.02 \\ \hline
**JD-TV GoP8** & 24.53 & 25.61 & 26.69 & 27.6 & 28.38 & 29.14 \\ \hline \hline \multicolumn{7}{c}{**Mobile Calendar**} \\ \hline
**Subrate** & **0.05** & **0.10** & **0.15** & **0.20** & **0.25** & **0.30** \\ \hline
**BCS-TV** & 17.79 & 19.71 & 20.69 & 21.77 & 22.71 & 23.61 \\ \hline
**JD-TV GoP3** & **24.54** & **25.38** & **25.82** & **26.49** & **27.2** & **27.76** \\ \hline
**JD-TV GoP5** & 22.46 & 23.49 & 24.26 & 24.95 & 25.71 & 26.39 \\ \hline
**High Motion** & \multicolumn{6}{c}{**J-TV GoP8**} \\
**Content Video** & \multicolumn{6}{c}{**Stefan**} \\ \hline
**Sequence** & **0.05** & **0.10** & **0.15** & **0.20** & **0.25** & **0.30** \\ \hline
**BCS-TV** & 19.92 & 21.76 & 22.89 & 24.14 & 25.23 & 26.42 \\ \hline
**JD-TV GoP3** & **24.3** & **27.06** & **27.13** & **28.71** & **29.53** & **30.44** \\ \hline
**JD-TV GoP5** & 23.68 & 25.34 & 26.59 & 27.87 & 28.52 & 29.76 \\ \hline
**JD-TV GoP8** & 23.39 & 25.08 & 26.27 & 27.07 & 27.93 & 29.00 \\ \hline \hline \end{tabular} Note: The bold values represent the highest PSNR (dB) achieved at specific subrate for video sequence.  
\end{table} 
Table 3: Average PNSR evaluation of proposed JD-TV scheme and the independent BCS-TV-AL3 for different low, moderate, and high motion content video sequences at various GoP. The reconstructed frames' visual quality is also tested by using SSIM metric on the same video sequences used for PSNR. The SSIM graphs of various video sequences with GoP sizes of 3, 5, and 8 at different subrates are presented in Figure 5.  
The SSIM shows a similar trend in terms of gain as of PSNR. Moreover, the result also indicates an enhancement in visual quality and a notable increase over the independent scheme. Also, the proposed scheme is tried at higher GoP sizes (16, 32). However, the frame reconstruction was not substantial enough to be imitated. In the case of VSN, the frequent transmission of the keyframes is not encouraged due to limited battery life as in the instance with GoP size 3 and 5; it will upsurge the computational load at the encoder (Low power node). Thus, GoP size 8 is measured as a more stable point between all the GoP sizes and will later opt-in trials.