Title :
OFDMA: A Broadband Wireless Access Technology
Author :
Hujun Yin ; Alamouti, S.
Author_Institution :
Intel Corp., Santa Clara
Abstract :
In this note, we review the design philosophies for uplink and downlink of OFDMA systems and demonstrate that OFDMA is a superior access technology for broadband wireless data network compared with traditional access technologies such as TDMA and CDMA. The main advantages of OFDMA over TDMA/CDMA stem from the scalability of OFDMA, the uplink orthogonality of OFDMA and the ability of OFDMA to take advantage of the frequency selectivity of the channel. Other advantages of OFDMA include its MIMO-friendliness and ability to provide superior quality of service (QoS).
Keywords :
OFDM modulation; broadband networks; frequency division multiple access; quality of service; radio access networks; wireless channels; CDMA; MIMO-friendliness; OFDMA; QoS; TDMA; broadband wireless access technology; broadband wireless data network; downlink multiplexing; downlink system capacity; orthogonal frequency division as multiple access; quality of service; uplink multiple access; Bandwidth; Delay; Downlink; Frequency domain analysis; Multiaccess communication; OFDM; Quality of service; Radio spectrum management; Scalability; Time division multiple access; CDMA; OFDM; OFDMA; TDMA;
Conference_Titel :
Sarnoff Symposium, 2006 IEEE
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4244-0002-7
DOI :
10.1109/SARNOF.2006.4534773
