Abstract
The multiuser multiple-input-multiple-output (MU-MIMO) technique is an attractive candidate in improving spectrum efficiency. However, in the uplink, the difference in the transmit timing among the signals from multiple mobile terminals (MTs) becomes significant. If the arrival timing difference among MTs exceeds the cyclic prefix (CP) length, it is difficult to separate the signal of each MT, and the transmission quality is severely degraded due to the effect of interblock interference (IBI). In this paper, we propose a novel multiuser detection (MUD) technique that can separate the signals, regardless of the arrival timing differences between the MTs. The proposed MUD technique is performed in the frequency domain by overlapping the fast Fourier transform (FFT) blocks, and the technique can suppress the effect of the IBI while retaining a low complexity level. The achievable bit error rate (BER) performance is evaluated by computer simulation in a frequency-selective fading channel, and the results confirm the effectiveness of the proposed technique.
| Original language | English |
|---|---|
| Pages (from-to) | 3066-3071 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Vehicular Technology |
| Volume | 58 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2009 |
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Keywords
- Artificial neural networks
- Cyclic prefix (CP)
- MIMO
- Multiuser detection
- Multiuser detection (MUD)
- Multiuser multiple-input multiple-output (MU-MIMO)
- OFDM
- Receivers
- Receiving antennas
- Timing
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Aerospace Engineering
- Automotive Engineering
- Computer Networks and Communications
- Applied Mathematics
Cite this
Multiuser Detection for Asynchronous Broadband Single-Carrier Transmission Systems. / Ishihara, Koichi; Takatori, Yasushi; Kubota, Shuji; Adachi, Fumiyuki.
In: IEEE Transactions on Vehicular Technology, Vol. 58, No. 6, 2009, p. 3066-3071.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Multiuser Detection for Asynchronous Broadband Single-Carrier Transmission Systems
AU - Ishihara, Koichi
AU - Takatori, Yasushi
AU - Kubota, Shuji
AU - Adachi, Fumiyuki
PY - 2009
Y1 - 2009
N2 - The multiuser multiple-input-multiple-output (MU-MIMO) technique is an attractive candidate in improving spectrum efficiency. However, in the uplink, the difference in the transmit timing among the signals from multiple mobile terminals (MTs) becomes significant. If the arrival timing difference among MTs exceeds the cyclic prefix (CP) length, it is difficult to separate the signal of each MT, and the transmission quality is severely degraded due to the effect of interblock interference (IBI). In this paper, we propose a novel multiuser detection (MUD) technique that can separate the signals, regardless of the arrival timing differences between the MTs. The proposed MUD technique is performed in the frequency domain by overlapping the fast Fourier transform (FFT) blocks, and the technique can suppress the effect of the IBI while retaining a low complexity level. The achievable bit error rate (BER) performance is evaluated by computer simulation in a frequency-selective fading channel, and the results confirm the effectiveness of the proposed technique.
AB - The multiuser multiple-input-multiple-output (MU-MIMO) technique is an attractive candidate in improving spectrum efficiency. However, in the uplink, the difference in the transmit timing among the signals from multiple mobile terminals (MTs) becomes significant. If the arrival timing difference among MTs exceeds the cyclic prefix (CP) length, it is difficult to separate the signal of each MT, and the transmission quality is severely degraded due to the effect of interblock interference (IBI). In this paper, we propose a novel multiuser detection (MUD) technique that can separate the signals, regardless of the arrival timing differences between the MTs. The proposed MUD technique is performed in the frequency domain by overlapping the fast Fourier transform (FFT) blocks, and the technique can suppress the effect of the IBI while retaining a low complexity level. The achievable bit error rate (BER) performance is evaluated by computer simulation in a frequency-selective fading channel, and the results confirm the effectiveness of the proposed technique.
KW - Artificial neural networks
KW - Cyclic prefix (CP)
KW - MIMO
KW - Multiuser detection
KW - Multiuser detection (MUD)
KW - Multiuser multiple-input multiple-output (MU-MIMO)
KW - OFDM
KW - Receivers
KW - Receiving antennas
KW - Timing
UR - http://www.scopus.com/inward/record.url?scp=67549102669&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67549102669&partnerID=8YFLogxK
U2 - 10.1109/TVT.2009.2012716
DO - 10.1109/TVT.2009.2012716
M3 - Article
AN - SCOPUS:67549102669
VL - 58
SP - 3066
EP - 3071
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
SN - 0018-9545
IS - 6
ER -