Your thinking about using wireless for gaming wow.......

A notable problem with wireless devices is that they still need a power source.

Most generally consider Wi-Fi to be wireless Ethernet, but it is far more than that.

Wired networks, such as Ethernet, are for communications between fixed locations. Wireless networks, such as Wi-Fi, are for communications between devices. The distinction is lost for fixed-location devices, but device mobility is the primary benefit of wireless.

The air is free, but to operate wireless networks one still needs a wired connection to a computer or the wired network, a source of power, and radios. Estimating the cost of a wired network is easy. It is the sum of the cost of the network cable, junctions, and connecting wires; the cable and junction installation; the network interfaces; and the long-term maintenance of the installed wiring plant.

The costs of wireless networks are more difficult to estimate. They include the cost of wiring to access points, access point equipment, wireless interfaces, and long-term wireless troubleshooting and maintenance.

The other notable problem of wireless devices is they still need a power source. Wired network nodes can draw power from the local alternating-current receptacle, but mobile wireless devices depend on batteries or some alternative power source. Of course, you can always plug the wireless device into a local power source, but then you lose the mobility advantage and incur the cost of installing power connections at the device. To some extent, the recent Power over Ethernet (PoE) standard IEEE 802.3af came into being to help resolve this problem by transporting electrical power on the wired Ethernet network so it is available to wireless access points. It is still too early to see much acceptance for this standard, but it is likely to be popular once products for it penetrate the market. However, PoE still does not address the issue of powering the wireless device itself.

Signal loss and fading

In the early twenty-first century, wireless networks still suffer from mysterious dead spots-areas where there is no reception. They are mysterious because even very careful planning cannot remove all dead spots, and sometimes live spots just move or, in the language of radio, fade. The spontaneous loss of communications for no apparent reason is probably one of the most irritating aspects of wireless networks. Often, the signal mysteriously returns even before one can investigate the cause of its loss. This occurs with cellular telephones, with Wi-Fi devices, and with all other wireless local area network (LAN) technologies.

Fading can be because of interference from other radio signals present in the same part of the spectrum as well as because of moving equipment. Sometimes, a live spot exists only as a result of a multipath effect when the signal reflects from some stationary object. Wi-Fi may fade in areas where microwave kitchen appliances are in use or where a cordless telephone is operating at 2.4 gigahertz.

Dead spots may occur within buildings depending on their materials of construction. In the line of sight between the access point and the wireless device, each time the radio wave passes through a solid the signal attenuates. Denser materials attenuate more than less dense materials. Metals, particularly steel, used in building construction may absorb or attenuate most of a radio signal, creating a dead spot in its radio shadow. Moving the access point or the device by a small amount, perhaps only a few millimeters, may eliminate the dead spot.

Finally, there are sunspots! The sun emits a broad spectrum of electromagnetic waves at all frequencies, which generally constitutes noise. Once in a while, the surface of the sun experiences flares or dark spots that emit very strong electromagnetic waves that interfere with radio transmissions. These things simply do not occur with wired communications.

Multipath distortion

Radio waves move from an omnidirectional antenna in all directions. When these radio waves strike a very dense object such as metal or stone, they reflect, much as light reflects from a mirror or other shiny surface. Even when there is a clear path between the transmitting and receiving antennas, some of the signal reflected from other paths will arrive at the receiving antenna. This phenomenon is multipath distortion, and it can affect the received signal, because the longer path will cause the signal to arrive out of phase with the signal from the direct path. The effect of multipath distortion can range from nothing to the cancellation of the signal, depending on the paths and the resulting delays. In some cases, the multipath effect can even boost the received signal. This occurs when both paths arrive at the same time-in phase-such as when multiple transmitting antennas are used.