Title :
A review on modulation techniques in multiband-orthogonal frequency division multiplexing in ultra-wideband channel
Author :
Din, Chempaka Mohd ; Mansor, Wahidah ; Mohamad, Roslina
Author_Institution :
Fac. of Electr. Eng., Univ. Teknol. MARA, Shah Alam, Malaysia
Abstract :
This paper describes a review on mapping or modulation techniques used in multiband orthogonal frequency division multiplexing (MB-OFDM) in ultra-wideband (UWB) channel. QAM, BPSK and QPSK modulation techniques are commonly used in this system due to their smooth power spectrum, low bit error rate (BER) and low receiver complexity. The new constant envelop modulation technique is proposed since it has the capability to improve the power spectrum density and BER performance. Continuous phase modulation (CPM) scheme could be used to reduce the complexity at the receiver. The constant envelop characteristics of CPM has to be analyzed in order to adapt this scheme in (MB-OFDM) UWB system.
Keywords :
OFDM modulation; communication complexity; continuous phase modulation; error statistics; quadrature amplitude modulation; quadrature phase shift keying; radio receivers; ultra wideband communication; wireless channels; BER performance; BPSK; MB-OFDM UWB system; QAM; QPSK; UWB channel; bit error rate; continuous phase modulation; mapping technique; modulation technique; multiband-orthogonal frequency division multiplexing; power spectrum density; receiver complexity; ultra-wideband channel; Bit error rate; Complexity theory; Matched filters; OFDM; Phase shift keying; Receivers; Continuous Phase Modulation; Multiband OFDM; Ultra-Wideband;
Conference_Titel :
Computers & Informatics (ISCI), 2011 IEEE Symposium on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-61284-689-7
DOI :
10.1109/ISCI.2011.5958980
