Improved and Optimal Dual Circular 32-QAM for MB-OFDM

Quadrature phase shift keying (QPSK) and dual carrier modulation (DCM) are currently used as the modulation schemes for multiband orthogonal frequency division multiplexing (MB-OFDM) in the ECMA-368 defined ultra-wideband (UWB) radio platform. ECMA-368 has been chosen as the physical radio platform...

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Bibliographic Details
Published inIEEE transactions on consumer electronics Vol. 55; no. 3; pp. 1121 - 1126
Main Authors Runfeng Yang, Sherratt, R.S.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Access control
Bit rate
Bluetooth
Channels
Consumer electronics
Data buses
DCM
Direct current
Dual Circular 32-QAM
Electronics
Frequency Diversity
MB-OFDM
Media Access Protocol
Modulation
OFDM
Optimization
Orthogonal Frequency Division Multiplexing
Phase modulation
Platforms
Quadrature phase shift keying
Radio
Throughput
Ultra wideband technology
Universal Serial Bus
Wireless networks
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Summary:Quadrature phase shift keying (QPSK) and dual carrier modulation (DCM) are currently used as the modulation schemes for multiband orthogonal frequency division multiplexing (MB-OFDM) in the ECMA-368 defined ultra-wideband (UWB) radio platform. ECMA-368 has been chosen as the physical radio platform for many systems including wireless USB (W-USB), Bluetooth 3.0 and wireless HDMI; hence ECMA-368 is an important issue to consumer electronics and the users' experience of these products. To enable the transport of high-rate USB, ECMA-368 offers up to 480 Mb/s instantaneous bit rate to the medium access control (MAC) layer, but depending on radio channel conditions dropped packets unfortunately result in a lower throughput. This paper presents improvement on a high data rate modulation scheme that fits within the configuration of the current standard increasing system throughput by achieving 600 Mb/s (reliable to 3.2 meters) thus maintaining the high rate USB throughput even with a moderate level of dropped packets. The modulation system is termed improved and optimal dual circular 32-QAM (DC 32-QAM). The system performance for improved and optimal DC 32-QAM modulation is presented and compared with previous DC 32- QAM, 16-QAM and DCM.
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ISSN:0098-3063
1558-4127
DOI:10.1109/TCE.2009.5277965