Chapter 5 Glossary

Chapter 5 - Glossary

Each subchannel in the COFDM implementation is about 300 KHz wide. At the low end of the speed gradient, BPSK (binary phase shift keying) is used to encode 125 Kbps of data per channel, resulting in a 6,000-Kbps, or 6 Mbps, data rate. Using quadrature phase shift keying, you can double the amount of data encoded to 250 Kbps per channel, yielding a 12-Mbps data rate. And by using 16-level quadrature amplitude modulation encoding 4 bits per hertz, you can achieve a data rate of 24 Mbps. The 802.11a/g standard specifies that all 802.11a/g-compliant products must support these basic data rates. The standard also lets the vendor extend the modulation scheme beyond 24 Mbps. Remember, the more bits per cycle (hertz) that are encoded, the more susceptible the signal will be to interference and fading, and ultimately, the shorter the range, unless power output is increased.

Default Key

This option allows you to select the default WEP key. This option allows you to use WEP keys without having to remember or write them down. The WEP keys generated using the Pass Phrase is compatible with other WLAN products. The Pass Phrase option is not as secure as manual assignment.

Device Name

Also known as DHCP client ID or network name. Sometimes provided by an ISP when using DHCP to assign addresses.

DHCP (Dynamic Host Configuration Protocol)

This protocol allows a computer (or many computers on your network) to be automatically assigned a single IP address from a DHCP server.

DNS Server Address (Domain Name System)

DNS allows Internet host computers to have a domain name and one or more IP addresses. A DNS server keeps a database of host computers and their respective domain names and IP addresses, so that when a user enters a domain name into the Internet browser, the user is sent to the proper IP address. The DNS server address used by the computers on your home network is the location of the DNS server your ISP has assigned.

DSL Modem (Digital Subscriber Line)

A DSL modem uses your existing phone lines to transmit data at high speeds.

Direct-Sequence Spread Spectrum (for 802.11b)

Spread spectrum (broadband) uses a narrowband signal to spread the transmission over a segment of the radio frequency band or spectrum. Direct-sequence is a spread spectrum technique where the transmitted signal is spread over a particular frequency range.

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ASUS WLAN Adapter

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Asus WL-160W Default Key, Device Name, Dhcp Dynamic Host Configuration Protocol, DNS Server Address Domain Name System

WL-160W specifications

The Asus WL-160W is a versatile and compact wireless USB adapter that caters to users seeking a reliable solution for connecting to Wi-Fi networks. Designed to offer high-speed internet access, this device supports the popular IEEE 802.11g standard, delivering data transfer rates of up to 54 Mbps. With its backward compatibility to the IEEE 802.11b standard, the WL-160W ensures seamless connectivity to older networks as well.

One of the standout features of the Asus WL-160W is its easy installation process. The adapter comes equipped with an intuitive setup wizard that simplifies the configuration, enabling users to connect to their wireless networks swiftly. With Plug and Play compatibility on most modern operating systems, users can experience hassle-free connectivity right out of the box.

The WL-160W boasts a compact and portable design, making it an excellent choice for users who require mobility, whether at home or on the go. Its lightweight nature allows for easy transport, enabling users to carry it in a laptop bag or pocket. The device also features a convenient USB interface, negating the need for an external power supply.

Security is a key consideration in wireless networking, and the Asus WL-160W does not disappoint. The adapter incorporates advanced encryption protocols, including WEP, WPA, and WPA2, ensuring that user data remains protected against unauthorized access. This level of security is essential in maintaining privacy and safeguarding sensitive information when using public networks.

Another notable characteristic of the WL-160W is its antenna design. The device utilizes a built-in antenna that enhances signal stability and range. This design helps users maintain a robust connection even at significant distances from the router, reducing the likelihood of drops in connectivity during use.

The Asus WL-160W also supports wireless roaming capabilities, allowing users to move freely within the coverage area without losing connection. This feature is particularly beneficial in larger spaces, where users may need to switch locations frequently.

Overall, the Asus WL-160W is a well-rounded wireless USB adapter that combines functionality with ease of use. Its solid performance, security features, and portability make it a dependable choice for anyone looking to enhance their wireless connectivity experience.