Abstract
Transmission power control (TPC) is used in wireless networks to improve channel reuse and/or reduce energy consumption. It has been often applied to single-input single-output (SISO) systems, where each node is equipped with a single antenna. Multi-input multi-output (MIMO) systems can improve the throughput or the signal-to-noise ratio (SNR) by providing multiplexing or diversity gains, respectively. In this paper, we incorporate a power-controlled MAC protocol for a wireless network with two antennas per node. Our protocol, coined CMAC, combines different types of MIMO gains, allowing for dynamic switching between diversity and multiplexing modes so as to maximize a utility function that depends on both energy consumption and throughput. CMAC adapts the "antenna mode," the transmission power, and the modulation order on a per-packet basis. By "antenna mode" we mean one of five possible transmit/receive antenna configurations: 1 × 1 (SISO), 2 × 1 (MISO-D), 1 × 2 (SIMO-D), 2 × 2 (MIMO-D), and 2 × 2 (MIMO-M). The second, third, and fourth configurations offer a diversity gain, whereas the last configuration offers a multiplexing gain. By using control packets to bound the transmission power of potentially interfering terminals, CMAC allows for multiple interference-limited transmissions to take place in the vicinity of a receiving terminal. We study via simulations the performance of CMAC in ad hoc topologies. Our results indicate that relative to non-adaptive protocols, CMAC achieves a significant improvement in both the overall energy consumption and the throughput.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 433-450 |
| Number of pages | 18 |
| Journal | Mobile Networks and Applications |
| Volume | 14 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 2009 |
Fingerprint
Keywords
- Ad hoc networks
- Diversity gain
- MIMO
- Multiplexing gain
- Power control
ASJC Scopus subject areas
- Computer Networks and Communications
- Hardware and Architecture
- Information Systems
- Software
Cite this
Channel access scheme for MIMO-enabled Ad Hoc networks with adaptive diversity/multiplexing gains. / Siam, Mohammad Z.; Krunz, Marwan M.
In: Mobile Networks and Applications, Vol. 14, No. 4, 08.2009, p. 433-450.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Channel access scheme for MIMO-enabled Ad Hoc networks with adaptive diversity/multiplexing gains
AU - Siam, Mohammad Z.
AU - Krunz, Marwan M
PY - 2009/8
Y1 - 2009/8
N2 - Transmission power control (TPC) is used in wireless networks to improve channel reuse and/or reduce energy consumption. It has been often applied to single-input single-output (SISO) systems, where each node is equipped with a single antenna. Multi-input multi-output (MIMO) systems can improve the throughput or the signal-to-noise ratio (SNR) by providing multiplexing or diversity gains, respectively. In this paper, we incorporate a power-controlled MAC protocol for a wireless network with two antennas per node. Our protocol, coined CMAC, combines different types of MIMO gains, allowing for dynamic switching between diversity and multiplexing modes so as to maximize a utility function that depends on both energy consumption and throughput. CMAC adapts the "antenna mode," the transmission power, and the modulation order on a per-packet basis. By "antenna mode" we mean one of five possible transmit/receive antenna configurations: 1 × 1 (SISO), 2 × 1 (MISO-D), 1 × 2 (SIMO-D), 2 × 2 (MIMO-D), and 2 × 2 (MIMO-M). The second, third, and fourth configurations offer a diversity gain, whereas the last configuration offers a multiplexing gain. By using control packets to bound the transmission power of potentially interfering terminals, CMAC allows for multiple interference-limited transmissions to take place in the vicinity of a receiving terminal. We study via simulations the performance of CMAC in ad hoc topologies. Our results indicate that relative to non-adaptive protocols, CMAC achieves a significant improvement in both the overall energy consumption and the throughput.
AB - Transmission power control (TPC) is used in wireless networks to improve channel reuse and/or reduce energy consumption. It has been often applied to single-input single-output (SISO) systems, where each node is equipped with a single antenna. Multi-input multi-output (MIMO) systems can improve the throughput or the signal-to-noise ratio (SNR) by providing multiplexing or diversity gains, respectively. In this paper, we incorporate a power-controlled MAC protocol for a wireless network with two antennas per node. Our protocol, coined CMAC, combines different types of MIMO gains, allowing for dynamic switching between diversity and multiplexing modes so as to maximize a utility function that depends on both energy consumption and throughput. CMAC adapts the "antenna mode," the transmission power, and the modulation order on a per-packet basis. By "antenna mode" we mean one of five possible transmit/receive antenna configurations: 1 × 1 (SISO), 2 × 1 (MISO-D), 1 × 2 (SIMO-D), 2 × 2 (MIMO-D), and 2 × 2 (MIMO-M). The second, third, and fourth configurations offer a diversity gain, whereas the last configuration offers a multiplexing gain. By using control packets to bound the transmission power of potentially interfering terminals, CMAC allows for multiple interference-limited transmissions to take place in the vicinity of a receiving terminal. We study via simulations the performance of CMAC in ad hoc topologies. Our results indicate that relative to non-adaptive protocols, CMAC achieves a significant improvement in both the overall energy consumption and the throughput.
KW - Ad hoc networks
KW - Diversity gain
KW - MIMO
KW - Multiplexing gain
KW - Power control
UR - http://www.scopus.com/inward/record.url?scp=70349630002&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349630002&partnerID=8YFLogxK
U2 - 10.1007/s11036-008-0107-8
DO - 10.1007/s11036-008-0107-8
M3 - Article
AN - SCOPUS:70349630002
VL - 14
SP - 433
EP - 450
JO - Mobile Networks and Applications
JF - Mobile Networks and Applications
SN - 1383-469X
IS - 4
ER -