Tbook 16 Power M5F8 Wifi Adapter is SLOOOOW!

[Cristian]

 

Speed should be 150Mbps but it is because it overpasses the 802.11g speed. But the reality is that its maximum will be 65Mbps :S

Just for people to know a little bit more about their machines.

Also the chip shares Bluetooth bandwidth, so if you do not use Bluetooth devices, turn it off in order to gain a little bit more of bus and bandwidth for the chip. 

Here are the technical aspects:

 

roduct Description

Product Features

• Operate at ISM frequency bands (2.4GHz)
• SDIO for WiFi and UART for Bluetooth
• IEEE standards support: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11d, IEEE 802.11e, IEEE 802.11h, IEEE 802.11i
• Fully Qualified for Bluetooth 2.1+EDR specification including both 2Mbps and 3Mbps modulation mode
• Fully qualified for Bluetooth 3.0
• Fully qualified for Bluetooth 4.0 Dual mode
• Full–speed Bluetooth operation with Piconet and Scatternet support
• Enterprise level security which can apply WPA/WPA2 certification for WiFi.
• WiFi 1 transmitter and 1 receiver allow data rates supporting up to 150 Mbps downstream and 150 Mbps upstream PHY rates

<table border=”1″ cellspacing=”0″ cellpadding=”0″>
<tbody>
<tr>
<td>Main Chipset</td>
<td>Realtek RTL8723BS-VD</td>
</tr>
<tr>
<td>Operating Frequency</td>
<td>2.400~2.4835GHz</td>
</tr>
<tr>
<td>Standards</td>
<td>WiFi:
IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11d,  IEEE 802.11e, IEEE 802.11h, IEEE 802.11i
BT:
V2.1+EDR/BT v3.0/BT v3.0+HS/BT v4.0</td>
</tr>
<tr>
<td>Modulation</td>
<td>WiFi:
802.11b: CCK(11, 5.5Mbps), QPSK(2Mbps), BPSK(1Mbps),
802.11 g/n: OFDM
BT:
8DPSK, π/4 DQPSK, GFSK</td>
</tr>
<tr>
<td>PHY Data rates</td>
<td>WiFi:
802.11b: 11,5.5,2,1 Mbps
802.11g: 54,48,36,24,18,12,9,6 Mbps
802.11n: up to 150Mbps
BT: 
1 Mbps for Basic Rate
2,3 Mbps for Enhanced Data Rate
6,9,12,18,24,36,48,54 Mbps for High Speed</td>
</tr>
<tr>
<td>Transmit Output Power</td>
<td>WiFi:
802.11b@11Mbps 16±1.5dBm
802.11g@6Mbps  14±1.5dBm
802.11g@54Mbps 14±1.5dBm
802.11n@65Mbps 13±1.5dBm (MCS 0_HT20)
13±1.5dBm (MCS 7_HT20)
13±1.5dBm (MCS 0_HT40)
13±1.5dBm (MCS 7_HT40)
BT:
Max +10dBm</td>
</tr>
<tr>
<td>EVM</td>
<td>802.11b /11Mbps : EVM<=-9dB
802.11g /54Mbps : EVM<=-25dB
802.11n /65Mbps : EVM<=-28dB</td>
</tr>
<tr>
<td rowspan=”3″>Receiver Sensitivity
(WiFi)</td>
<td>802.11b @8% PER
1Mbps -88dBm
2Mbps -87dBm
5.5Mbps -85dBm
11Mbps -82dBm</td>
</tr>
<tr>
<td>802.11g@10% PER
6Mbps -86dBm
9Mbps -85dBm
12Mbps -84dBm
18Mbps -82dBm
24Mbps -80dBm
36Mbps -77dBm
48Mbps -73dBm
54Mbps -71dBm</td>
</tr>
<tr>
<td>802.11n@10% PER
MCS 0 -83dBm
MCS 1 -82dBm
MCS 2 -80dBm
MCS 3 -78dBm
MCS 4 -75dBm
MCS 5 -71dBm
MCS 6 -69dBm
MCS 7 -67dBm</td>
</tr>
<tr>
<td>Receiver Sensitivity
(BT)</td>
<td>-89dBm @ 1Mbps
-86dBm @ 2Mbps
-83dBm @ 3Mbps</td>
</tr>
<tr>
<td>Operating Channel</td>
<td>WiFi 2.4GHz: 
11: (Ch. 1-11) – United States
13: (Ch. 1-13) – Europe
14: (Ch. 1-14) – Japan
BT 2.4GHz: Ch. 0 ~78</td>
</tr>
<tr>
<td>Media Access Control</td>
<td>WiFi:  CSMA/CA with ACK
BT:  AFH, Time Division</td>
</tr>
<tr>
<td>Antenna</td>
<td>External Antenna</td>
</tr>
<tr>
<td>Network Architecture</td>
<td>WiFi: Ad-hoc mode (Peer-to-Peer )
Infrastructure mode
Software AP
WiFi Direct
BT:  Pico Net, Scatter Net</td>
</tr>
<tr>
<td>Security</td>
<td>WiFi: WPA, WPA-PSK, WPA2, WPA2-PSK, WEP 64bit & 128bit, IEEE 802.11x, IEEE 802.11i
BT:   Simple Paring</td>
</tr>
<tr>
<td>OS Supported</td>
<td>Android /Linux/ Win CE /iOS /XP/WIN7</td>
</tr>
<tr>
<td>Host Interface</td>
<td>WiFi: SDIO
BT: UART</td>
</tr>
<tr>
<td>Operating Voltage</td>
<td>3.3±10% Vdc  I/O supply voltage</td>
</tr>
<tr>
<td>Dimension</td>
<td>Typical  L12.0*W12.0*H1.8mm</td>
</tr>
</tbody>
</table>

2.2 Power Consumption

<table border=”1″ cellspacing=”0″ cellpadding=”0″>
<tbody>
<tr>
<td>Power Consumption
(Typical by using SWR)</td>
<td>WiFi only:  
TX Mode: (Throughput mode) 170mA  (MCS7/BW40/13dBm)
RX Mode: (Throughput mode) 130mA  (MCS7/BW40/-60dBm)
Associated Idle power saving with DTIM=3  2.1mA
Unassociated Idle:  0.1mA
RF disable Mode:   0.1mA

BT: Inquiry & Page Scan:  0.9 mA
ACL no traffic:         7.5mA
SCO HV3:           15.0mA</td>
</tr>
</tbody>
</table>

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