By IEEE Communications Society
The final reference publication for execs within the instant undefined
the data provided during this booklet displays the evolution of instant applied sciences, their impression at the career, and the industry's mostly accredited most sensible practices. prepared into seven major components of workmanship, A consultant to the instant Engineering physique of information (WEBOK) complements readers' realizing of:
- instant entry applied sciences
- community and repair structure
- community administration and protection
- Radio frequency engineering, propagation,and antennas
- amenities infrastructure
- Agreements, criteria, rules, and rules
- instant engineering basics
Complemented with a number of references and recommendations for additional interpreting, the WEBOK is an critical source for someone operating within the instant undefined.
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Additional resources for A Guide to the Wireless Engineering Body of Knowledge (WEBOK)
This motivated global collaboration to define 3G standards with such design goals as flexibility, interoperability, affordability, compatibility, and modularity. The ITU-R M. 1457 Recommendation identified five radio interfaces, while a sixth (WiMAX-based) air interface was added to the family in 2007: IMT-DS (Direct Sequence) - WCDMAAJTRA FDD IMT-MC (Multi-Carrier) - cdma2000 IMT-TC (Time-Code) - UTRA TDD (TD-CDMA, TD-SCDMA) IMT-SC (Single Carrier) - EDGE IMT-FT (Frequency-Time) - DECT IMT-OFDMA TDD WMAN - WiMAX The evolution of IMT-2000 beyond 3G (IMT-Advanced) is introduced later in this chapter.
Wireless Access Technologies 35 Figure 1-20: Block Diagram of Basic cdmaOne Reverse-Link Transmission Access channels are used by mobile stations not engaged in a call to send messages to the base station. Typical messages sent include registration and call-origination messages, and responses to requests or to orders received from the base station. Reverse traffic channels are used by mobile stations while on a call to transmit user data and signaling information to the base station. The reverse-traffic channels can operate at different rates depending on the service options supported.
16 working group has specified broadband wireless access across all scenarios of fixed, nomadic, and high user mobility. , candidate parameter sets) and products. The WiMAX Forum, with a number of working groups, certifies and promotes the compatibility and interoperability of broadband wireless products based on the harmonized IEEE . 4 Mobile Technology Generations and Nomadic Implementations Figure 1-10 shows a simplified view of the evolution of mobile access technology standards, and highlights nomadic broadband wireless access.
A Guide to the Wireless Engineering Body of Knowledge (WEBOK) by IEEE Communications Society