Abstract
This paper applies minimum mean square error (MMSE) interference rejection followed by joint maximum likelihood detection (MLD) to a receiver in a distributed antenna network (DAN).DANreceivers capture not only the desired signals, but also the interference signals from nearby uncoordinated antennas. For the overloaded signal situation, nonlinear detection schemes such as joint MLD can be applied to the received signals. However, the amount of metric calculations in joint MLD increases exponentially with the number of signal streams. Therefore, MMSE interference rejection followed by MLD detection is proposed. The proposed scheme reduces the complexity by a factor of 1=2M (NT -1) where NT is the number of interference signals with 2MQAM modulation. The effect of residual interference after the MMSE interference rejection is evaluated. Numerical results obtained through computer simulation and experiment show that the performance of the proposed scheme is about 4:0 dB worse at a bit error rate (BER) of 10-3 than that of the joint MLD while its complexity is four times lower for QPSK signal streams. The BER performance degradation can be suppressed to about 2:5 dB by adjusting the value of the coefficient in the MMSE matrix.
| Original language | English |
|---|---|
| Pages (from-to) | 2471-2478 |
| Number of pages | 8 |
| Journal | IEICE Transactions on Communications |
| Volume | E101B |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2018 Dec 1 |
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Keywords
- 5G
- DAN
- Interference rejection
- Joint MLD
ASJC Scopus subject areas
- Software
- Computer Networks and Communications
- Electrical and Electronic Engineering
Cite this
Performance of MMSE interference rejection followed by joint MLD for DAN. / Miyagi, Hirokazu; Sanada, Yukitoshi.
In: IEICE Transactions on Communications, Vol. E101B, No. 12, 01.12.2018, p. 2471-2478.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Performance of MMSE interference rejection followed by joint MLD for DAN
AU - Miyagi, Hirokazu
AU - Sanada, Yukitoshi
PY - 2018/12/1
Y1 - 2018/12/1
N2 - This paper applies minimum mean square error (MMSE) interference rejection followed by joint maximum likelihood detection (MLD) to a receiver in a distributed antenna network (DAN).DANreceivers capture not only the desired signals, but also the interference signals from nearby uncoordinated antennas. For the overloaded signal situation, nonlinear detection schemes such as joint MLD can be applied to the received signals. However, the amount of metric calculations in joint MLD increases exponentially with the number of signal streams. Therefore, MMSE interference rejection followed by MLD detection is proposed. The proposed scheme reduces the complexity by a factor of 1=2M (NT -1) where NT is the number of interference signals with 2MQAM modulation. The effect of residual interference after the MMSE interference rejection is evaluated. Numerical results obtained through computer simulation and experiment show that the performance of the proposed scheme is about 4:0 dB worse at a bit error rate (BER) of 10-3 than that of the joint MLD while its complexity is four times lower for QPSK signal streams. The BER performance degradation can be suppressed to about 2:5 dB by adjusting the value of the coefficient in the MMSE matrix.
AB - This paper applies minimum mean square error (MMSE) interference rejection followed by joint maximum likelihood detection (MLD) to a receiver in a distributed antenna network (DAN).DANreceivers capture not only the desired signals, but also the interference signals from nearby uncoordinated antennas. For the overloaded signal situation, nonlinear detection schemes such as joint MLD can be applied to the received signals. However, the amount of metric calculations in joint MLD increases exponentially with the number of signal streams. Therefore, MMSE interference rejection followed by MLD detection is proposed. The proposed scheme reduces the complexity by a factor of 1=2M (NT -1) where NT is the number of interference signals with 2MQAM modulation. The effect of residual interference after the MMSE interference rejection is evaluated. Numerical results obtained through computer simulation and experiment show that the performance of the proposed scheme is about 4:0 dB worse at a bit error rate (BER) of 10-3 than that of the joint MLD while its complexity is four times lower for QPSK signal streams. The BER performance degradation can be suppressed to about 2:5 dB by adjusting the value of the coefficient in the MMSE matrix.
KW - 5G
KW - DAN
KW - Interference rejection
KW - Joint MLD
UR - http://www.scopus.com/inward/record.url?scp=85057469633&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057469633&partnerID=8YFLogxK
U2 - 10.1587/transcom.2018EBP3032
DO - 10.1587/transcom.2018EBP3032
M3 - Article
AN - SCOPUS:85057469633
VL - E101B
SP - 2471
EP - 2478
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
SN - 0916-8516
IS - 12
ER -