Impact of EIRP Constraint on MU-MIMO 802.11ac Capacity Gain in Home Networks

Issiali, Khouloud; Guillet, Valéry; Zein, Ghaïs El; Zaharia, Gheorghe

doi:10.1007/978-3-319-30301-7_9

Cited by 1 publication

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References 6 publications

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“…For a MU-MIMO system with K users and n R k receiving antennas for each user k, the channel capacity for a particular propagation channel sample is expressed for each Orthogonal Frequency-Division Multiplexing (OFDM) subcarrier by (1).…”

Section: A Mu-mimo Capacitymentioning

confidence: 99%

“…where p ik is the power dedicated to the i th antenna for the k th user, µ 2 ik are the eigenvalues of the effective channel for the k th user after applying the IUI cancellation, and σ 2 n is the noise power. The total transmitted power over 20 M Hz bandwidth is equally shared among p ik and is scaled to satisfy the Equivalent Isotropically Radiated Power (EIRP) constraint of Wireless Local Area Network (WLAN) [1], and K = 2 throughout this paper.…”

Section: A Mu-mimo Capacitymentioning

confidence: 99%

“…In this context, the new IEEE 802.11ac standard ratified in January 2014 normalizes the MU-MIMO processing, namely precoding techniques [1]. The use of MU-MIMO methods aims to increase data rates above 1 Gbits/s and to improve capacity.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

IEEE 802.11ac multi-user MIMO capacity and impact of antenna array geometry based on indoor measurements

Issiali

Guillet

Zein

et al. 2015

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

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Based on channel measurements conducted at 5 GHz, this paper examines the impact of transmitting antennas on the Block Diagonalization (BD) capacity gain for IEEE 802.11ac MultiUser Multiple Input Multiple Output (MU-MIMO) in Home Networks. We study in details a system with two users with two antennas each by evaluating multiple numbers as well as various geometries of transmitting antennas. The experiments reveal that Crossed Circular Array (CCA) is recommended for small sized transmitter with 8 antennas (70% of MU-MIMO capacity gain over Single User MIMO (SU-MIMO) is achieved for a 20 dB of Signal-to-Noise Ratio (SNR)). In the context of a less congested system, it has been shown that using 6 transmitting antennas arranged in Uniform Linear Array (ULA) gives a gain close to that obtained with 8 antennas. We have also shown, using measured path loss values, that the capacity gain of MU-MIMO to SU-MIMO goes beyond the double when the difference between the received power of each user is high. This is obtained in comparison with the Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) as a channel access method, 130% of gain is achieved when the gap between the received powers of each user is around 40 dB.

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Section: A Mu-mimo Capacitymentioning

confidence: 99%

Section: A Mu-mimo Capacitymentioning

confidence: 99%