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Re: really see 54 Mbps with 54g?
As with any wireless protocol, 54g has overhead associated with it that limits performance. While signaling data rates of up to 54 Mbps may be achieved, like most shared media (e.g. Ethernet) throughput will be significantly less. There are two scenarios for 54g performance. In an environment with only 54g clients, throughput can exceed 24 Mbps. This performance is equivalent to that of 802.11a, although 54g is usually available over a greater range. The second scenario is where 802.11b clients are present. RTS/CTS flow control must be used to allow 802.11b clients to recognize and establish communications with 802.11g access points. This leads to delays in transmission and drops peak throughput to about 10 Mbps. 54g performance is still well in excess of the maximum measured speeds of 4-5 Mbps for 802.11b. The use of RTS/CTS is important because it provides determinism to the wireless network, ensuring a minimum bandwidth for each user. Like Ethernet, 802.11 LANs normally use a ג?carrier sense media accessג? mechanism to signal transmission without asking for permission from the network. As the network becomes highly loaded, collisions occur more frequently and the network can become saturated with packet retransmission attempts that eventually make it impossible for any data to get through. RTS/CTS provides a more formalized flow-control mechanism that avoids this problem.
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Anyway, you might have some luck calling Comcast and asking them for a higher-bandwidth service, but really if you're connecting to your router over a wireless channel that will be your bottleneck since the 802.11g standard for wireless networking supports a maximum bandwidth of 54 Megabits per second (Mbps).
In 1997 the Institute of Electrical and Electronics Engineers (IEEE) created the first WLAN standard. They called it 802.11 after the name of the group formed to oversee its development. this first version only supported a maximum network bandwidth of 2 Mbps today it has been improved to over 300Mbps using MIMO devices based on this first version, a comparable wired LAN on CAT5e Ethernet twisted pair cables usually is classes at a minimum of 10Mbps to a maximum speed of 100Mbps (often called 100/10Mbps) Here is a summary of all the Wi-Fi versions and letter numbers upto the present day in 2010.
In 1999, the 802.11b specification was released for the the domestic market, supporting bandwidth up to 11 Mbps at the same time the 802.11a was released for the business market upporting bandwidth up to 54 Mbps it was much more expensive and signals had more difficulty penetrating walls and other obstructions so it was dropped. In 2003, WLAN products supporting a newer standard called 802.11g it combines the best of both 802.11a and 802.11b it supports the same bandwidth as 802.11a of 54 Mbps (hence it is often called 54g this is the Wi-Fi standard), it uses the 2.4 Ghz frequency for greater range the 802.11g technology is backwards compatible with 802.11b, all WLAN cards will call this 802.11b/g Some versions offer 128g which is 54g twice but only if the router will supports this doubled speed, the majority of all routers use a V.90 modem which will only support 54Mbps (aka 54g).
The newest IEEE standard in the Wi-Fi category is 802.11n (called MIMO technology) . It was designed to improve on 802.11g in the amount of bandwidth supported by utilizing multiple wireless signals and using antennas instead of one, it support data rates of over 100 Mbps upto 300Mbps and also offers somewhat better range over earlier Wi-Fi standards due to its increased signal intensity. All 802.11n equipment will be backward compatible with 802.11g/b networks.
Most internal WLAN cards are plug and play on the PCI bus, however more and more version are being provided as either a USB or PCMCIA version for laptops and desktops, this version below will work with all versions 11b, 54g and 11n upto 300Mbps ( if the router that you have will suport it.
The latest technology is called Wi-MAX is designed for long-range networking spanning miles or kilometers as opposed to local area wireless networking or WLAN. The other end of the Wireless technology spectrum, that split from 802.11b is called BlueTooth and works up to a maximum distance of 10 Meters used exclusively as the standard in Mobile Phone devices like headphones and short distance inter-connection to other phones and PC's.
how far away are you from your wireless router when your getting 10 mbps?
Please note that wireless will not guarantee speeds of 54 mbps.
It will dramatically decrease the farther away you or how much interference there is between your laptop and router.
Also check if your wireless router is set to 802.11 G mode. if you have any devices that only support 802.11B you will only get speeds up to 11mbps compared to G at 54mbps
N series routers can communicate at a speed of 150 Mbps, only if the wireless adapter that is built-in into the computer comes under N standard... Most of the wireless adapters comes under G standard, which can communicate only at a speed of 54 Mbps... The N standard routers are backward compatible, which can communicate with N standard adapters at 150 Mbps, and with G standard adapters at 54 Mbps and with B standard at 11 Mbps...
The speed in which the adapters can communicate are listed below... B - 11 Mbps G - 54 mbps N - 150 Mbps
Wireless Ethernet (802.11a or b or g) does not get the bandwidth you would get through a cabled connection. My guess is that you have an 802.11g network card in your computer and 54 Mbps is the top theoretical speed for that type of Wireless adapter. Cabled connections will give you the theoretical throughput of 100 Mbps. Also, since this Linksys device is not a Wireless access point but simply a switch, your computer doesn't actually connect to it. Most likely you are connecting to your cable or DSL modem. Most of these have a wireless radio built in.
Wi if is the slowest form of connection and is shared with other devices. If you want good bandwidth you need to connect via ethernet cable directly to the router.
Examlpe... wi if 4 meg shared, Ethernet 100 meg..
good luck !
54 Mbps is the speed between your computer and your wireless router. The .8 Mbps is the speed of your connection between the router and the internet. You should call your ISP and ask what your speeds should be; there could be something wrong on their end or your modem might be malfunctioning. It's also possible that your WiFi connection itself has a weak signal. That can be corrected by moving the router and the computer closer together, or getting a signal relay and putting it between them.
54g products will perform differently depending on whether or not there is 802.11b traffic in the immediate environment. The rules-of-thumb for throughput are: In an 802.11g-only environment, throughput will be between 4-5 times the throughput of an 802.11b network. The maximum throughput can exceed 24 Mbps. In an environment that includes 802.11b devices, throughput will be about double the throughput of an 802.11b network. The maximum throughput can exceed 10 Mbps. In addition, all 54g radios have better sensitivity than current 802.11b radios, and 54g provides outstanding coverage in its 802.11b compatible mode.
54g implements the latest draft of the IEEE 802.11g specification. The two primary distinctions between 54g and 802.11g are:
1) 54g is designed to enable 54 Mbps connectivity. The 802.11g draft specification makes 54 Mbps connectivity optional, and simply requires up to 24 Mbps connectivity to comply with the specification.
2) 54g products are based on the same wireless LAN chipset, which means they are interoperable. Because the standard is not final, it is not yet possible to test for 802.11g interoperability.