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Order statistics based CDF scheduling methods in multiuser heterogeneous systems

Anh H. Nguyen, Yichao Huang, Bhaskar D. Rao
2014 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
In modern heterogeneous wireless networks, the task of supporting fairness along with user priorities and concurrently achieving the highest possible system throughput is desirable and challenging.  ...  The mapping from channel quality information (CQI) to the real CDF is unknown but is constructed exploiting the order statistics of the CQI sequence.  ...  CONCLUSION We have proposed practical approaches to enable the application of CDF scheduling technique in heterogeneous multiuser systems.  ... 
doi:10.1109/icassp.2014.6853631 dblp:conf/icassp/NguyenHR14 fatcat:lmbiookgongdtn42tz3sbo6ilm

Performance Analysis of Scheduling in Multiuser MIMO Systems with Zero-Forcing Receivers

Chiung-jang Chen, Li-chun Wang
2007 IEEE Journal on Selected Areas in Communications  
Using the order statistics technique, we derive closed-form expressions for the sum-rate capacity of the multiuser MIMO system that employs the simple spatial multiplexing at the transmitter and zero-forcing  ...  In this paper, we present an analytical framework to evaluate the performance of the zero-forcing receiver operating in the multiuser MIMO system with user scheduling.  ...  Since the users have near-far distribution in range of the heterogenous multiuser MIMO system, there can be differences in path loss from each user to the base station.  ... 
doi:10.1109/jsac.2007.070916 fatcat:zqxfgliedrghtkcegwtineytiy

An Analytical Framework for Heterogeneous Partial Feedback Design in Heterogeneous Multicell OFDMA Networks

Yichao Huang, Bhaskar D. Rao
2013 IEEE Transactions on Signal Processing  
For a system employing the cumulative distribution function based scheduling, which satisfies the two above mentioned desired features, we develop an analytical framework to investigate heterogeneous partial  ...  feedback in a general OFDMA-based heterogeneous multicell employing the best-M partial feedback strategy.  ...  In order to leverage multiuser diversity and guarantee fairness 6 , we employ the CDF-based scheduling policy [29] , [30] .  ... 
doi:10.1109/tsp.2012.2226447 fatcat:ldwir4yzgrgxrpedsstnd2zrgy

Multi-device selection scheduling in non-identically distributed fading channels

Youngwook Ko, Atta Ul Quddus, Rahim Tafazolli
2016 IET Communications  
Multiuser selection scheduling concept has been recently proposed in the literature in order to increase the multiuser diversity gain and overcome the significant feedback requirements for the opportunistic  ...  In this work, we propose to integrate the principle of multiuser selection and the proportional fair scheduling scheme.  ...  For small cell multiuser systems, a joint admission and power control method was studied to maximize the number of acceptable users in [16] .  ... 
doi:10.1049/iet-com.2015.0977 fatcat:4qkddw5xe5cuzdo3yjcjhjb5qe

Random Beamforming with Heterogeneous Users and Selective Feedback: Individual Sum Rate and Individual Scaling Laws

Yichao Huang, Bhaskar D. Rao
2013 IEEE Transactions on Wireless Communications  
This paper investigates three open problems in random beamforming based communication systems: the scheduling policy with heterogeneous users, the closed form sum rate, and the randomness of multiuser  ...  By employing the cumulative distribution function based scheduling policy, we guarantee fairness among users as well as obtain multiuser diversity gain in the heterogeneous scenario.  ...  This is the only system requirement to conduct the CDF-based scheduling, and the CDF can be obtained by infrequent feedback from users and learned by the system.  ... 
doi:10.1109/twc.2013.032513.120437 fatcat:bmhhs2yqzvgtdnlmlp2os3lgpi

Multicell Random Beamforming with CDF-based Scheduling: Exact Rate and Scaling Laws [article]

Yichao Huang, Bhaskar D. Rao
2013 arXiv   pre-print
of distributed scheduling based systems.  ...  The cumulative distribution function (CDF)-based scheduling policy utilized in [1] and [2] is leveraged to maintain fairness among users and simultaneously obtain multiuser diversity gain.  ...  In order to guarantee scheduling fairness and obtain multiuser diversity gain, we employ the CDF-based scheduling policy [12] as ψ (0) k,j = 1 ((M − 1)(ℓ + 1) − j))!  ... 
arXiv:1303.2587v2 fatcat:6mngmrcpvvdjfbekwo4u7h7rmq

Power Management in Multiuser Adaptive Modulation Transmission under QoS Requirements

Saud Althunibat, Nizar Zorba, Charalabos Skianis, Christos Verikoukis
2013 International Journal of Antennas and Propagation  
A transmitter power management mechanism is presented in this paper where Multiple-Input Multiple-Output (MIMO) Multiuser Random Beamforming with Adaptive Modulation strategy is performed by the system  ...  The multiuser system capability is also exploited to achieve larger power saving values and smaller probability of power outage by scheduling the user with the best channel characteristics at each time  ...  The cdf of the th maximum user can be easily derived using the order statistics cdf, considering that the cdf of the th maximum user is the cdf of the ( − )th order statistics [15] .  ... 
doi:10.1155/2013/730710 fatcat:icmzuptcijbvhes4iwy6iuzkdu

Multiuser Scheduling over MIMO Nakagami-m Fading Channels: Capacity and BER Performance

Mohammad Torabi, David Haccoun, Wessam Ajib
2009 VTC Spring 2009 - IEEE 69th Vehicular Technology Conference  
We consider different scheduling schemes including absolute SNR-based scheduling and normalized SNR-based scheduling schemes for both heterogeneous and homogeneous wireless networks.  ...  A performance analysis for the average channel capacity and average bit error rate (BER) of user scheduling schemes for multiuser MIMO systems exploiting the multiuser and antenna diversities over non-identically  ...  The derivations of PDF and CDF expressions for the user scheduling in the OSTBC system are presented in Section IV.  ... 
doi:10.1109/vetecs.2009.5073708 dblp:conf/vtc/TorabiHA09 fatcat:zezuj4t7pvd63dgsghuqk6hube

Scheduling for Multiuser MIMO Downlink Channels with Ranking-Based Feedback

Marios Kountouris, Thomas Sälzer, David Gesbert
2008 EURASIP Journal on Advances in Signal Processing  
Simulation results show that feedback reduction of order of 40−50% can be achieved with negligible decrease in system throughput.  ...  The performance of a system that performs user selection using ranking-based CSIT in the context of random opportunistic beamforming is analyzed, and we provide design guidelines on the number of required  ...  This method is shown to reduce statistically the required total amount of feedback by means of multiuser diversity.  ... 
doi:10.1155/2008/854120 fatcat:2f4rcyi4tber3fwrh7uruschxq

Opportunistic Access Schemes for Multiuser OFDM Wireless Networks [chapter]

Cedric Gueguen, Sebastien Baey
2010 Radio Communications  
These schedulers take benefit of multiuser and frequency diversity in order to maximize the system throughput. All these schemes strongly rely on diversity for offering their good performances.  ...  With this scheduling, physical layer information (represented through the factor m k,n ) are used in order to take advantage of the time, frequency and multiuser diversity and maximize the system capacity  ...  Various aspects will be deeply discussed: channel modeling, beamforming, multiple antennas, cooperative networks, opportunistic scheduling, advanced admission control, handover management, systems performance  ... 
doi:10.5772/9463 fatcat:u4ln556usjhufhryci7jl472hm

Performance Analysis of Heterogeneous Feedback Design in an OFDMA Downlink With Partial and Imperfect Feedback

Yichao Huang, Bhaskar D. Rao
2013 IEEE Transactions on Signal Processing  
We also investigate how to adapt to the imperfections in order to maximize the average goodput under heterogeneous partial feedback.  ...  Homogeneous feedback design with a common subband size is not aware of the heterogeneous channel statistics among users.  ...  Herein, we investigate this heterogeneous feedback design in a multiuser opportunistic scheduling framework where the system favors the user with the best channel condition to exploit multiuser diversity  ... 
doi:10.1109/tsp.2012.2229275 fatcat:ag5k3alz5rasvlz3gepe54q2z4

Optimized opportunistic multicast scheduling (OMS) over wireless cellular networks

Tze-ping Low, Man-on Pun, Y.-w. Hong, C.-c. Kuo
2010 IEEE Transactions on Wireless Communications  
Then, we extend results to heterogeneous networks where users are subject to different channel statistics.  ...  Then, we extend results to heterogeneous networks where users are subject to different channel statistics.  ...  These methods effectively increase throughput with reduced delay by exploiting multiuser diversity inherent in wireless networks [1] - [3] .  ... 
doi:10.1109/twc.2010.02.090387 fatcat:6ajp7tp6gvap7ffyyohu4qgza4

Performance of Cross-layer Design with Multiple Outdated Estimates in Multiuser MIMO System

X. Yu, Y. Liu, Y. Li, Q. Zhu, X. Yin, K. Qian
2014 Radioengineering  
By combining adaptive modulation (AM) and automatic repeat request (ARQ) protocol as well as user scheduling, the cross-layer design scheme of multiuser MIMO system with imperfect feedback is presented  ...  Based on this method and imperfect feedback information, the closed-form expressions of spectral efficiency (SE) and packet error rate (PER) of the system subject to the target PER constraint are respectively  ...  This is also the PDF of the feedback SNR for user k , ( According to the order statistics [12] and (3) , and using transformation of variables, the CDF and PDF of  can be obtained as follows: 0 1 0  ... 
doaj:1491c40fd14240068181bb20c645197d fatcat:kju2ofn2o5hyzi3h425vypdya4

Opportunistic Beamforming and Scheduling for OFDMA Systems

Patrick Svedman, Sarah Kate Wilson, Leonard J. Cimini, Bjrn Ottersten
2007 IEEE Transactions on Communications  
This paper addresses three problems in multiuser diversity for OFDMA systems.  ...  The modified PF scheduler was able to give users different QoS, based on their requirements, while still exploiting multiuser diversity.  ...  Note that this method does not require knowledge of the users' speeds. V. SIMULATION RESULTS In order to evaluate the proposed schemes, simulations of a multicell system have been performed.  ... 
doi:10.1109/tcomm.2007.896082 fatcat:p6rlrwdjljhz3pzfvr6syt6tle

On Comparison Analysis of Multiple Interference MIMO Systems with Un-Correlated Rician Fading Channels

Affum Emmanuel, Addo Emmanuel
2013 International Journal of Computer Applications  
This paper evaluates the multiple-input multiple-output (MIMO) wireless systems in Uncorrelated Racian interference Channel using the successive decoding approach.  ...  Also, the numerical result obtained favors large number of Antennas in applicative point of view as the performance of system with larger number of Antennas seems less affected by the variance and the  ...  Two multiuser scheduling schemes were considered: Absolute SNR-based scheduling (AS) and normalized SNR-based scheduling (NS) schemes for both heterogeneous and homogeneous wireless networks.  ... 
doi:10.5120/13336-0291 fatcat:hipw5jrqwfgzbf56glr6se2juq
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