May 2010
Beginner to intermediate
264 pages
7h 26m
English
Content preview from Digital Signal Processing 101Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
CHAPTER 15OFDMA Wireless Communications
The latest mobile communication technology following CDMA wireless systems is naturally called fourth generation, or “4G.” The goals of a fourth generation system are yet even higher data capabilities, to be able to support voice, Internet, streaming video, and other services. Known as orthogonal frequency division multiplexing, or OFDM, it utilizes a completely different technology than 3G. OFDM has also been used in broadcast systems and for wireless LAN (Wi-Fi). These systems are point-to-multipoint systems. In the case of broadcast, it was basically one-way transmission. To use OFDM in mobile communications systems require a multiple access system, which requires some additional considerations. This ...