{{{#!comment
[[Include(wiki:802.11/beta-note)]]
}}}

[[TracNav(802.11/TOC)]]

{{{#!html
<script type="text/javascript" src="/js/flotr2.min.js"></script>
<script type="text/javascript" src="/js/mango_plots_util.js"></script>

<script type="text/javascript">
function track_fmt_len_v_xput(obj) {return 'PHY Rate: ' + obj.series.label + '<br>Payload: ' + Number(obj.x).toFixed(0) +' B<br>Throughput: ' + obj.y + ' Mbps';}
function track_fmt_rate_v_xput(obj) {return 'Flow: ' + obj.series.label + '<br>Throughput: ' + obj.y + ' Mbps';}
</script>


}}}

= Throughput Benchmarks =

== Throughput vs. SNR ==
This test measures the achieved throughput of each PHY rate between two WARP v3 nodes running the 802.11 Reference Design. One node acts as AP, the other as a STA. Traffic is generated locally via the LTG framework; measurements are extracted from the nodes via [../../wlan_exp the experiments framework]. The nodes' RF interfaces are connected via a coax cable and a variable attenuator. The attenuation is swept from 55dB to 83dB in 0.5dB steps.

{{{#!html
<div id="div_xput_rate_v_snr" style="width:750px; height:420px"></div>
<a href="#" onClick="div_xput_rate_v_snr.download.saveImage('png');">Download PNG</a>

<script type="text/javascript">
(function () {
	var container = document.getElementById('div_xput_rate_v_snr');

var chart_data = [

{label:"6 Mbps", data:[[-55.0,5.33],[-55.5,5.33],[-56.0,5.33],[-56.5,5.33],[-57.0,5.33],[-57.5,5.33],[-58.0,5.33],[-58.5,5.32],[-59.0,5.33],[-59.5,5.33],[-60.0,5.32],[-60.5,5.33],[-61.0,5.33],[-61.5,5.33],[-62.0,5.32],[-62.5,5.33],[-63.0,5.33],[-63.5,5.33],[-64.0,5.33],[-64.5,5.33],[-65.0,5.33],[-65.5,5.33],[-66.0,5.33],[-66.5,5.33],[-67.0,5.33],[-67.5,5.32],[-68.0,5.33],[-68.5,5.32],[-69.0,5.33],[-69.5,5.33],[-70.0,5.33],[-70.5,5.33],[-71.0,5.33],[-71.5,5.33],[-72.0,5.33],[-72.5,5.32],[-73.0,5.33],[-73.5,5.31],[-74.0,5.31],[-74.5,5.31],[-75.0,5.30],[-75.5,5.28],[-76.0,5.27],[-76.5,5.26],[-77.0,5.22],[-77.5,5.16],[-78.0,5.14],[-78.5,5.02],[-79.0,4.73],[-79.5,4.24],[-80.0,3.07],[-80.5,1.54],[-81.0,0.47],[-81.5,0.13],[-82.0,0.01],[-82.5,0.00],]},

{label:"9 Mbps", data:[[-55.0,7.66],[-55.5,7.65],[-56.0,7.65],[-56.5,7.65],[-57.0,7.65],[-57.5,7.65],[-58.0,7.65],[-58.5,7.65],[-59.0,7.64],[-59.5,7.65],[-60.0,7.65],[-60.5,7.65],[-61.0,7.65],[-61.5,7.65],[-62.0,7.65],[-62.5,7.65],[-63.0,7.65],[-63.5,7.65],[-64.0,7.65],[-64.5,7.65],[-65.0,7.65],[-65.5,7.65],[-66.0,7.64],[-66.5,7.65],[-67.0,7.65],[-67.5,7.65],[-68.0,7.65],[-68.5,7.65],[-69.0,7.65],[-69.5,7.65],[-70.0,7.65],[-70.5,7.65],[-71.0,7.65],[-71.5,7.65],[-72.0,7.65],[-72.5,7.64],[-73.0,7.64],[-73.5,7.63],[-74.0,7.64],[-74.5,7.62],[-75.0,7.54],[-75.5,7.48],[-76.0,7.22],[-76.5,6.84],[-77.0,5.65],[-77.5,4.12],[-78.0,2.33],[-78.5,0.87],[-79.0,0.14],[-79.5,0.04],[-80.0,0.00],[-80.5,0.00],[-81.0,0.00],[-81.5,0.00],[-82.0,0.00],[-82.5,0.00],]},

{label:"12 Mbps", data:[[-55.0,9.90],[-55.5,9.89],[-56.0,9.90],[-56.5,9.89],[-57.0,9.88],[-57.5,9.90],[-58.0,9.88],[-58.5,9.88],[-59.0,9.88],[-59.5,9.89],[-60.0,9.89],[-60.5,9.89],[-61.0,9.88],[-61.5,9.88],[-62.0,9.88],[-62.5,9.88],[-63.0,9.89],[-63.5,9.90],[-64.0,9.90],[-64.5,9.90],[-65.0,9.90],[-65.5,9.89],[-66.0,9.89],[-66.5,9.88],[-67.0,9.88],[-67.5,9.88],[-68.0,9.88],[-68.5,9.88],[-69.0,9.89],[-69.5,9.89],[-70.0,9.88],[-70.5,9.88],[-71.0,9.89],[-71.5,9.89],[-72.0,9.88],[-72.5,9.88],[-73.0,9.87],[-73.5,9.86],[-74.0,9.83],[-74.5,9.80],[-75.0,9.70],[-75.5,9.45],[-76.0,9.17],[-76.5,8.53],[-77.0,7.33],[-77.5,5.29],[-78.0,3.10],[-78.5,1.25],[-79.0,0.16],[-79.5,0.02],[-80.0,0.00],[-80.5,0.00],[-81.0,0.00],[-81.5,0.00],[-82.0,0.00],[-82.5,0.00],]},

{label:"18 Mbps", data:[[-55.0,13.78],[-55.5,13.76],[-56.0,13.75],[-56.5,13.77],[-57.0,13.76],[-57.5,13.76],[-58.0,13.76],[-58.5,13.75],[-59.0,13.77],[-59.5,13.77],[-60.0,13.74],[-60.5,13.75],[-61.0,13.76],[-61.5,13.77],[-62.0,13.78],[-62.5,13.78],[-63.0,13.76],[-63.5,13.78],[-64.0,13.78],[-64.5,13.77],[-65.0,13.77],[-65.5,13.76],[-66.0,13.77],[-66.5,13.77],[-67.0,13.76],[-67.5,13.75],[-68.0,13.77],[-68.5,13.77],[-69.0,13.76],[-69.5,13.77],[-70.0,13.77],[-70.5,13.76],[-71.0,13.76],[-71.5,13.77],[-72.0,13.74],[-72.5,13.66],[-73.0,13.45],[-73.5,13.26],[-74.0,12.88],[-74.5,11.94],[-75.0,9.99],[-75.5,7.05],[-76.0,3.80],[-76.5,1.37],[-77.0,0.33],[-77.5,0.11],[-78.0,0.01],[-78.5,0.00],[-79.0,0.00],[-79.5,0.00],[-80.0,0.00],[-80.5,0.00],[-81.0,0.00],[-81.5,0.00],[-82.0,0.00],[-82.5,0.00],]},

{label:"24 Mbps", data:[[-55.0,17.24],[-55.5,17.23],[-56.0,17.23],[-56.5,17.22],[-57.0,17.21],[-57.5,17.23],[-58.0,17.23],[-58.5,17.23],[-59.0,17.23],[-59.5,17.24],[-60.0,17.24],[-60.5,17.23],[-61.0,17.22],[-61.5,17.21],[-62.0,17.22],[-62.5,17.24],[-63.0,17.21],[-63.5,17.24],[-64.0,17.22],[-64.5,17.21],[-65.0,17.24],[-65.5,17.25],[-66.0,17.23],[-66.5,17.22],[-67.0,17.23],[-67.5,17.22],[-68.0,17.23],[-68.5,17.25],[-69.0,17.21],[-69.5,17.16],[-70.0,17.05],[-70.5,16.81],[-71.0,16.20],[-71.5,15.24],[-72.0,13.74],[-72.5,9.78],[-73.0,5.52],[-73.5,4.42],[-74.0,2.45],[-74.5,0.92],[-75.0,0.22],[-75.5,0.05],[-76.0,0.01],[-76.5,0.00],[-77.0,0.00],[-77.5,0.00],[-78.0,0.00],[-78.5,0.00],[-79.0,0.00],[-79.5,0.00],[-80.0,0.00],[-80.5,0.00],[-81.0,0.00],[-81.5,0.00],[-82.0,0.00],[-82.5,0.00],]},

{label:"36 Mbps", data:[[-55.0,22.86],[-55.5,22.86],[-56.0,22.86],[-56.5,22.85],[-57.0,22.84],[-57.5,22.84],[-58.0,22.84],[-58.5,22.81],[-59.0,22.83],[-59.5,22.85],[-60.0,22.79],[-60.5,22.84],[-61.0,22.82],[-61.5,22.78],[-62.0,22.83],[-62.5,22.83],[-63.0,22.83],[-63.5,22.82],[-64.0,22.83],[-64.5,22.81],[-65.0,22.81],[-65.5,22.77],[-66.0,22.74],[-66.5,22.56],[-67.0,22.60],[-67.5,22.31],[-68.0,21.79],[-68.5,20.73],[-69.0,18.65],[-69.5,15.57],[-70.0,11.37],[-70.5,6.26],[-71.0,1.85],[-71.5,0.49],[-72.0,0.15],[-72.5,0.03],[-73.0,0.00],[-73.5,0.00],[-74.0,0.00],[-74.5,0.00],[-75.0,0.00],[-75.5,0.00],[-76.0,0.00],[-76.5,0.00],[-77.0,0.00],[-77.5,0.00],[-78.0,0.00],[-78.5,0.00],[-79.0,0.00],[-79.5,0.00],[-80.0,0.00],[-80.5,0.00],[-81.0,0.00],[-81.5,0.00],[-82.0,0.00],[-82.5,0.00],]},

{label:"48 Mbps", data:[[-55.0,27.09],[-55.5,27.13],[-56.0,27.11],[-56.5,27.11],[-57.0,27.08],[-57.5,27.08],[-58.0,27.12],[-58.5,27.14],[-59.0,27.05],[-59.5,26.98],[-60.0,26.84],[-60.5,26.70],[-61.0,26.45],[-61.5,26.13],[-62.0,25.64],[-62.5,24.61],[-63.0,22.61],[-63.5,20.06],[-64.0,16.82],[-64.5,12.65],[-65.0,7.72],[-65.5,3.85],[-66.0,1.58],[-66.5,0.42],[-67.0,0.62],[-67.5,0.17],[-68.0,0.04],[-68.5,0.00],[-69.0,0.00],[-69.5,0.00],[-70.0,0.00],[-70.5,0.00],[-71.0,0.00],[-71.5,0.00],[-72.0,0.00],[-72.5,0.00],[-73.0,0.00],[-73.5,0.00],[-74.0,0.00],[-74.5,0.00],[-75.0,0.00],[-75.5,0.00],[-76.0,0.00],[-76.5,0.00],[-77.0,0.00],[-77.5,0.00],[-78.0,0.00],[-78.5,0.00],[-79.0,0.00],[-79.5,0.00],[-80.0,0.00],[-80.5,0.00],[-81.0,0.00],[-81.5,0.00],[-82.0,0.00],[-82.5,0.00],]},

{label:"54 Mbps", data:[[-55.0,29.06],[-55.5,29.09],[-56.0,28.99],[-56.5,28.99],[-57.0,28.93],[-57.5,28.64],[-58.0,28.42],[-58.5,28.13],[-59.0,27.34],[-59.5,26.15],[-60.0,25.07],[-60.5,23.77],[-61.0,21.57],[-61.5,18.50],[-62.0,14.65],[-62.5,10.64],[-63.0,4.33],[-63.5,1.59],[-64.0,0.54],[-64.5,0.27],[-65.0,0.08],[-65.5,0.02],[-66.0,0.00],[-66.5,0.00],[-67.0,0.00],[-67.5,0.00],[-68.0,0.00],[-68.5,0.00],[-69.0,0.00],[-69.5,0.00],[-70.0,0.00],[-70.5,0.00],[-71.0,0.00],[-71.5,0.00],[-72.0,0.00],[-72.5,0.00],[-73.0,0.00],[-73.5,0.00],[-74.0,0.00],[-74.5,0.00],[-75.0,0.00],[-75.5,0.00],[-76.0,0.00],[-76.5,0.00],[-77.0,0.00],[-77.5,0.00],[-78.0,0.00],[-78.5,0.00],[-79.0,0.00],[-79.5,0.00],[-80.0,0.00],[-80.5,0.00],[-81.0,0.00],[-81.5,0.00],[-82.0,0.00],[-82.5,0.00],]},]

var xlabel = "Attenuation (dB)";
var ylabel = "Achieved Throughput (Mbps)";
var title =  "802.11 Reference Design - Throughput vs PHY Rate";
var subtitle =  "Design v1.0";
var x_range = [-82.5,-54];
var y_range = [0, 30];

	// Draw Graph
	graph_xput_v_len = Flotr.draw(container, chart_data,
	{
		title: title,
		subtitle: subtitle,
		HtmlText: false,
		resolution: 2,
		points: {show: true},
		lines: {show: true},
		mouse : {
			track : true,
			relative : true,
			margin : 10,
			trackFormatter: track_fmt_rate_v_xput
		},
		yaxis : {
			min: y_range[0], 
			max: y_range[1],
			title: ylabel,
			titleAngle: "90",
			titleAlign: 'center',
			tickDecimals: 0,
		},
		xaxis : {
			title: xlabel,
			min: x_range[0], 
			max: x_range[1],
			showLabels: true,
			tickFormatter: function(val, axisOpts){return Math.abs(val)+'';},
		},
		legend: {
			position: 'nw',
			backgroundColor: '#fff'
		}
	});
})();

</script>

}}}

=== Observations ===
* The performance of each PHY rate over an AWGN link lines up with theoretical predictions ![1]

![1] [http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=1175541 Goodput analysis and link adaptation for IEEE 802.11a wireless LANs] - Daji Qiao; Sunghyun Choi; Shin, K.G.

== Throughput vs. Payload Length ==
This test measures the achieved throughput of each PHY rate between two WARP v3 nodes running the 802.11 Reference Design. One node acts as AP, the other as a STA. Traffic is generated locally via the LTG framework; measurements are extracted from the nodes via the [wiki:../../wlan_exp experiments framework]. The nodes' RF interfaces are connected via a coax cable and 50dB attenuation.

{{{#!html
<div id="div_xput_rate_v_len" style="width:750px; height:420px"></div>
<a href="#" onClick="graph_xput_v_len.download.saveImage('png');">Download PNG</a>

<script type="text/javascript">
(function () {
	var container = document.getElementById('div_xput_rate_v_len');

chart_data = [
{points: {show:false}, lines: {lineWidth: 1}, data:[[100.00,2.24],[200.00,3.27],[300.00,3.84],[400.00,4.22],[500.00,4.50],[600.00,4.68],[700.00,4.84],[800.00,4.96],[900.00,5.05],[1000.00,5.14],[1100.00,5.21],[1200.00,5.26],[1300.00,5.31],[1400.00,5.36],[1500.00,5.39],]},
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{points: {show:false}, lines: {lineWidth: 1}, data:[[100.00,3.11],[200.00,4.92],[300.00,6.10],[400.00,6.99],[500.00,7.61],[600.00,8.09],[700.00,8.52],[800.00,8.82],[900.00,9.07],[1000.00,9.33],[1100.00,9.51],[1200.00,9.66],[1300.00,9.83],[1400.00,9.95],[1500.00,10.05],]},
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{points: {show:false}, lines: {lineWidth: 1}, data:[[100.00,3.82],[200.00,6.52],[300.00,8.65],[400.00,10.34],[500.00,11.58],[600.00,12.72],[700.00,13.68],[800.00,14.37],[900.00,15.08],[1000.00,15.70],[1100.00,16.13],[1200.00,16.62],[1300.00,17.06],[1400.00,17.35],[1500.00,17.71],]},
{points: {show:false}, lines: {lineWidth: 1}, data:[[100.00,4.13],[200.00,7.49],[300.00,10.11],[400.00,12.43],[500.00,14.21],[600.00,15.71],[700.00,17.20],[800.00,18.31],[900.00,19.49],[1000.00,20.33],[1100.00,21.28],[1200.00,21.94],[1300.00,22.73],[1400.00,23.26],[1500.00,23.74],]},
{points: {show:false}, lines: {lineWidth: 1}, data:[[100.00,4.31],[200.00,7.94],[300.00,11.03],[400.00,13.70],[500.00,15.78],[600.00,17.81],[700.00,19.61],[800.00,21.23],[900.00,22.68],[1000.00,23.99],[1100.00,24.89],[1200.00,25.98],[1300.00,26.98],[1400.00,27.90],[1500.00,28.74],]},
{points: {show:false}, lines: {lineWidth: 1}, data:[[100.00,4.41],[200.00,8.10],[300.00,11.24],[400.00,14.19],[500.00,16.56],[600.00,18.64],[700.00,20.48],[800.00,22.42],[900.00,23.88],[1000.00,25.20],[1100.00,26.71],[1200.00,27.79],[1300.00,28.77],[1400.00,29.99],[1500.00,30.81],]},

{label:"6 Mbps", data:[[100,1.77],[200,3.01],[300,3.70],[400,4.10],[500,4.40],[600,4.62],[700,4.77],[800,4.91],[900,5.02],[1000,5.09],[1100,5.17],[1200,5.24],[1300,5.28],[1400,5.33],[1500,5.37],]},

{label:"9 Mbps", data:[[100,2.08],[200,3.73],[300,4.77],[400,5.46],[500,5.96],[600,6.34],[700,6.61],[800,6.85],[900,7.04],[1000,7.21],[1100,7.33],[1200,7.45],[1300,7.56],[1400,7.65],[1500,7.73],]},

{label:"12 Mbps", data:[[100,2.36],[200,4.46],[300,5.78],[400,6.70],[500,7.42],[600,7.93],[700,8.34],[800,8.71],[900,8.97],[1000,9.19],[1100,9.43],[1200,9.59],[1300,9.72],[1400,9.89],[1500,9.99],]},

{label:"18 Mbps", data:[[100,2.61],[200,5.20],[300,7.05],[400,8.43],[500,9.53],[600,10.40],[700,11.01],[800,11.57],[900,12.10],[1000,12.53],[1100,12.91],[1200,13.21],[1300,13.51],[1400,13.77],[1500,14.00],]},

{label:"24 Mbps", data:[[100,2.81],[200,5.83],[300,7.99],[400,9.76],[500,11.24],[600,12.29],[700,13.27],[800,14.14],[900,14.74],[1000,15.42],[1100,15.99],[1200,16.37],[1300,16.85],[1400,17.23],[1500,17.48],]},

{label:"36 Mbps", data:[[100,3.00],[200,6.37],[300,9.20],[400,11.45],[500,13.50],[600,15.04],[700,16.35],[800,17.71],[900,18.71],[1000,19.79],[1100,20.59],[1200,21.50],[1300,22.13],[1400,22.83],[1500,23.32],]},

{label:"48 Mbps", data:[[100,3.06],[200,6.74],[300,9.88],[400,12.61],[500,14.99],[600,16.84],[700,18.61],[800,20.31],[900,21.75],[1000,23.13],[1100,24.37],[1200,25.17],[1300,26.23],[1400,27.14],[1500,27.98],]},

{label:"54 Mbps", data:[[100,3.13],[200,6.88],[300,10.04],[400,13.02],[500,15.42],[600,17.58],[700,19.41],[800,21.38],[900,22.87],[1000,24.23],[1100,25.77],[1200,26.81],[1300,27.84],[1400,29.16],[1500,29.88],]},



]

var xlabel = "Payload Size (Bytes)";
var ylabel = "Achieved Throughput (Mbps)";
var title =  "802.11 Reference Design - Throughput vs Payload Length";
var subtitle =  "Design v1.0";
var x_range = [0, 1525];
var y_range = [0, 30];

	// Draw Graph
	graph_xput_v_len = Flotr.draw(container, chart_data,
	{
		title: title,
  		colors: ['#00A8F0', '#C0D800', '#CB4B4B', '#4DA74D', '#9440ED', '#0086C0', '#A3AC00', '#A23C3C','#00A8F0', '#C0D800', '#CB4B4B', '#4DA74D', '#9440ED', '#0086C0', '#A3AC00', '#A23C3C'],
		subtitle: subtitle,
		HtmlText: false,
		resolution: 2,
		points: {show: true},
		lines: {show: true},
		mouse : {
			track : true,
			relative : true,
			margin : 10,
			trackFormatter: track_fmt_len_v_xput
		},
		yaxis : {
			min: y_range[0], 
			max: y_range[1],
			title: ylabel,
			titleAngle: "90",
			titleAlign: 'center',
			tickDecimals: 0,
		},
		xaxis : {
			title: xlabel,
			min: x_range[0], 
			max: x_range[1],
		},
		legend: {
			position: 'nw',
			backgroundColor: '#fff'
		}
	});
})();

</script>
}}}

=== Observations ===
 * The 802.11 Reference Design performance matches the performance predicted by an analysis of the overhead in the 802.11 MAC and PHY ![1].


![1] <need citation for overhead paper>