A single-carrier/OFDM comparison for broadband wireless communication

OFDM is a popular modulation scheme for broadband wireless communication. It elegantly handles multipath and has low complexity. Recently, single-carrier with frequency-domain processing (SC-FD) is gaining attention as a possible competitor for OFDM. It is based on the same principles and, therefore...

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Bibliographic Details
Main Authors: Van der Perre, L., Tubbax, J., Horlin, F., De Man, H.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Bandwidth
Bit error rate
Broadband amplifiers
Broadband communication
Equalizers
Exact sciences and technology
Frequency diversity
Information, signal and communications theory
Modulation, demodulation
Multiplexing
OFDM modulation
Power amplifiers
Signal and communications theory
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Wireless communication
Wireless LAN
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Summary:OFDM is a popular modulation scheme for broadband wireless communication. It elegantly handles multipath and has low complexity. Recently, single-carrier with frequency-domain processing (SC-FD) is gaining attention as a possible competitor for OFDM. It is based on the same principles and, therefore, it has similar multipath handling capabilities and low complexity. Moreover, SC-FD promises several other attractive advantages, such as power amplifier efficiency and inherent frequency diversity exploitation. Current performance comparisons do not consider these effects combined. We make the comparison in a realistic scenario considering both the power amplifier efficiency and frequency diversity. Our results show that, in a multipath environment, SC-FD can outperform OFDM by 4 dB, largely due to the better frequency diversity exploitation. Therefore, SC-FD is a good alternative to OFDM for battery-powered terminals, and is therefore especially suited for uplink communication.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2004.1326261