Abstract
A new detection scheme for multiuser multiple-input multiple-output (MIMO) systems is analytically presented. In particular, the transmitting users are being categorized in two distinct priority service groups, while they communicate directly with a multi-antenna receiver. The linear zero-forcing scheme is applied in two consecutive detection stages upon the signal reception. In the first stage, the signals of one service group are detected, followed by the second stage, including the corresponding detection of the remaining signals. An appropriate switching scheme based on specific transmission quality requirements is utilized prior to the detection so as to allocate the signals of a given service group to the suitable detection stage. The objective is the provision of the reception quality for both service groups. The proposed approach can be implemented directly in cognitive radio communication assigning the secondary users to the appropriate service group. The exact outage probability of the considered system is derived in closed form. The special case of massive MIMO is further studied yielding some useful engineering outcomes; the effective channel coherence time and a certain optimality condition defining both the transmission quality and effective number of independent transmissions.
| Original language | English |
|---|---|
| Article number | 8368094 |
| Pages (from-to) | 5148-5161 |
| Number of pages | 14 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 17 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 1 2018 |
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Keywords
- Cognitive radio
- Imperfect channel estimation
- Massive MIMO
- Multiuser detection
- Outage probability
- Spatial multiplexing
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
Cite this
All cognitive MIMO : New multiuser detection approach with different priorities. / Miridakis, Nikolaos I.; Tsiftsis, Theodoros; Vergados, Dimitrios D.; Michalas, Angelos.
In: IEEE Transactions on Wireless Communications, Vol. 17, No. 8, 8368094, 01.08.2018, p. 5148-5161.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - All cognitive MIMO
T2 - New multiuser detection approach with different priorities
AU - Miridakis, Nikolaos I.
AU - Tsiftsis, Theodoros
AU - Vergados, Dimitrios D.
AU - Michalas, Angelos
PY - 2018/8/1
Y1 - 2018/8/1
N2 - A new detection scheme for multiuser multiple-input multiple-output (MIMO) systems is analytically presented. In particular, the transmitting users are being categorized in two distinct priority service groups, while they communicate directly with a multi-antenna receiver. The linear zero-forcing scheme is applied in two consecutive detection stages upon the signal reception. In the first stage, the signals of one service group are detected, followed by the second stage, including the corresponding detection of the remaining signals. An appropriate switching scheme based on specific transmission quality requirements is utilized prior to the detection so as to allocate the signals of a given service group to the suitable detection stage. The objective is the provision of the reception quality for both service groups. The proposed approach can be implemented directly in cognitive radio communication assigning the secondary users to the appropriate service group. The exact outage probability of the considered system is derived in closed form. The special case of massive MIMO is further studied yielding some useful engineering outcomes; the effective channel coherence time and a certain optimality condition defining both the transmission quality and effective number of independent transmissions.
AB - A new detection scheme for multiuser multiple-input multiple-output (MIMO) systems is analytically presented. In particular, the transmitting users are being categorized in two distinct priority service groups, while they communicate directly with a multi-antenna receiver. The linear zero-forcing scheme is applied in two consecutive detection stages upon the signal reception. In the first stage, the signals of one service group are detected, followed by the second stage, including the corresponding detection of the remaining signals. An appropriate switching scheme based on specific transmission quality requirements is utilized prior to the detection so as to allocate the signals of a given service group to the suitable detection stage. The objective is the provision of the reception quality for both service groups. The proposed approach can be implemented directly in cognitive radio communication assigning the secondary users to the appropriate service group. The exact outage probability of the considered system is derived in closed form. The special case of massive MIMO is further studied yielding some useful engineering outcomes; the effective channel coherence time and a certain optimality condition defining both the transmission quality and effective number of independent transmissions.
KW - Cognitive radio
KW - Imperfect channel estimation
KW - Massive MIMO
KW - Multiuser detection
KW - Outage probability
KW - Spatial multiplexing
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UR - http://www.scopus.com/inward/citedby.url?scp=85047638306&partnerID=8YFLogxK
U2 - 10.1109/TWC.2018.2838594
DO - 10.1109/TWC.2018.2838594
M3 - Article
VL - 17
SP - 5148
EP - 5161
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
SN - 1536-1276
IS - 8
M1 - 8368094
ER -