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ABSTRACT: Multi-user single-carrier multiple-input multiple-output (MU SC-MIMO) multiplexing can increase the uplink capacity of a cellular
system without expanding the signal bandwidth. It is practically important to make clear an extent to which the MU SC-MIMO
multiplexing combined with frequency-domain equalization (FDE) and transmit power control (TPC) can increase the uplink capacity
in the presence of the co-channel interference (CCI). Since the theoretical analysis is quite difficult, we resort to the
computer simulation to investigate the uplink capacity. In this paper, frequency-domain zero-forcing detection (ZFD) and frequency-domain
minimum mean square error detection (MMSED) are considered for MU signal detection. It is shown that ZFD and MMSED provide
almost the same uplink capacity and that an advantage of fast TPC over slow TPC diminishes. As a result, MU SC-MIMO using
computationally efficient ZFD can be used together with slow TPC instead of using MMSED. With 8 receive antennas and slow
TPC, MU SC-MIMO multiplexing using ZFD can achieve about 1.5times higher uplink capacity than SU SC-SIMO diversity.
KeywordsMulti-user MIMO–Single-carrier–Frequency-domain equalization–Cellular system–Uplink-capacity
Wireless Personal Communications 04/2012; 58(3):455-468. · 0.46 Impact Factor
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IEICE Transactions. 01/2012; 95-B:198-205.
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IEICE Transactions. 01/2011; 94-B:2847-2856.
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IEICE Transactions. 01/2011; 94-B:1386-1395.
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IEICE Transactions. 01/2011; 94-B:1366-1375.
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IEICE Transactions. 01/2011; 94-B:1396-1404.
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Proceedings of the 74th IEEE Vehicular Technology Conference, VTC Fall 2011, 5-8 September 2011, San Francisco, CA, USA; 01/2011
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IEICE Transactions. 01/2011; 94-B:3559-3568.
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IEICE Transactions. 01/2011; 94-B:750-757.
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Wireless Communications and Mobile Computing. 01/2011; 11:1551-1563.
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Proceedings of the 74th IEEE Vehicular Technology Conference, VTC Fall 2011, 5-8 September 2011, San Francisco, CA, USA; 01/2011
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ABSTRACT: Single carrier (SC) signal transmission has a property of low peak-to-average power ratio (PAPR) and achieves the frequency diversity gain by the use of frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion. In this paper, Nyquist filtered broadband SC transmission is considered. As the transmit filter roll-off factor α increases, the signal bandwidth increases and the PAPR reduces. MMSE-FDE using spectrum combining was proposed in [15]. An additional frequency diversity gain can be obtained by making use of the excess bandwidth introduced by the transmit filter and by using spectrum combining. In this paper, we thoroughly investigate how α affects PAPR, BER performance, and throughput performance.
Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st; 06/2010
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IEICE Transactions. 01/2010; 93-B:2104-2112.
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IEICE Transactions. 01/2010; 93-A:2201-2211.
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Proceedings of the 6th International Wireless Communications and Mobile Computing Conference, IWCMC 2010, Caen, France, June 28 - July 2, 2010; 01/2010
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IEICE Transactions. 01/2010; 93-B:2753-2760.
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Proceedings of the 71st IEEE Vehicular Technology Conference, VTC Spring 2010, 16-19 May 2010, Taipei, Taiwan; 01/2010
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Proceedings of the 70th IEEE Vehicular Technology Conference, VTC Fall 2009, 20-23 September 2009, Anchorage, Alaska, USA; 01/2009
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IEICE Transactions. 01/2009; 92-B:2789-2808.
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IEICE Transactions. 01/2009; 92-B:1563-1572.