The MIMO broadcast channel
Nonconcave Utility Maximisation in the MIMO Broadcast Channel
... In this work, a multiuser, multiantenna downlink in a single-cell wireless system is considered, which, from the viewpoint of information theory, corresponds to a MIMO broadcast channel (MIMO ...
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Stable Transmission in the Time-Varying MIMO Broadcast Channel
... When step 4 is dropped from the algorithm, equal power is used for each data stream and only a small loss in throughput is seen as the number of users increases. Figure 4 shows the convergence with the number of ...
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A Comparison of Scheduling Strategies for MIMO Broadcast Channel with Limited Feedback on OFDM Systems
... Figure 2 illustrates the average SR achieved by the scheduling algorithms as a function of the number of users K in the low K scenario for a feedback rate of 12 bit/user/resource block/slot. We note a negligible loss in ...
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Artificial noise aided biobjective transmitter optimization for service integration in multi user MIMO broadcast channel
... The broadcast nature of wireless medium makes privacy an inherent ...of channel state information (CSI) available to the transmitter (see the comprehensive overview in ...
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Code designs for MIMO broadcast channels
... for MIMO Broadcast Channels Momin Uppal, Student Member, IEEE, Vladimir Stankovi´c, Member, IEEE, and Zixiang Xiong Fellow, IEEE Abstract—Recent information-theoretic results show the opti- mality of ...
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MIMO BROADCAST CHANNELS WITH COORDINATION OF BASE STATION FOR DATA TRANSMISSION
... network MIMO, all base stations can transmit data to all users and the whole network effectively represents a MIMO broadcast channel (BC) with distributed ...feedback channel is digital ...
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A simple block diagonal precoding for multi user MIMO broadcast channels
... Multi-user MIMO; Broadcast channel; Precoding; Block diagonalization; QR decomposition; Eigenvalue decomposition; Diagonal Jacket matrix 1 Introduction Recently, the research of the capacity region ...
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Reducing The Effect of Channel Time Variations in MIMO Broadcast Systems
... (MIMO) broadcast channels with Zero- Forcing Beamforming (ZFBF) in the presence of outdated Channel State Information (CSI) is ...of channel variation for the case of fixed-rate users using ...
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Optimal Power Allocation with Channel Inversion Regularization-Based Precoding for MIMO Broadcast Channels
... the channel matrix of selected user subset is thus often poorly ...effective channel gain ...effective channel gain is more prominent in the case of low ...
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Reduced feedback for selective fading MIMO broadcast channels
... At the end of the training phase, the source recon- structs the channel using one of the above strategies and adapts itself to the quantized channel. Figure 4 compares the sum capacity of the MIMO BC ...
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A Design Framework for Scalar Feedback in MIMO Broadcast Channels
... second step of full CSIT feedback, which means that given a set of users selected for transmission by using Metric 3, the BS requests full channel information from those users to perform transmit matched ...
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A hybrid TIM-NOMA scheme for the Broadcast Channel
... the channel gain difference among users is ...the MIMO case and 11dB for the SISO case, the total sum rate of the hybrid scheme is 100% better than the sum rate of TDMA, proving the gain in terms of sum ...
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Capacity and Fairness of MIMO Broadcast Algorithms in Shadow Fading Environments
... Fig. 6. Fairness of ITWF: percentage of active spatial channels and users, with and without shadowing. 1) Percentage of Active Users and Channels: Figure 6 shows the increasing fairness of ITWF as SNR av increases. At ...
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A Method for Analyzing Broadcast Beamforming of Massive MIMO Antenna Array
... Analyzing Broadcast Beamforming of Massive MIMO Antenna Array Hong-Wei Yuan 1, 2, * , Guan-Feng Cui 3 , and Jing Fan 4 Abstract—In this paper, a new analysis method of broadcast beamforming for a ...
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Mode Switching for the Multi-Antenna Broadcast Channel Based on Delay and Channel Quantization
... quantized channel information, while MU-MIMO with zero-forcing precoding loses its spatial multiplexing gain with a fixed delay or fixed codebook ...the channel quantization codebook ...
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MIMO CHANNEL CAPACITY
... In no-ergodic channel, the channel capacity ≠ the average maximum mutual information. ⟹ to measure the capacity of this channel: using probability of[r] ...
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Multi-Channel Broadcast Encryption
... previous broadcast encryption models only dealt with one single content and one single target set at a ...efficient broadcast encryption scheme, but not quite relevant to ...independent broadcast ...
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Energy efficient estimation of a MIMO channel
... wireless channel that affects the transmissions. To this end, various channel estimation algorithms have been proposed in the literature for multiple-input multiple-output (MIMO) ...a channel ...
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Measured Characteristics of the MIMO Wireless Channel
... for MIMO algorithms that use channel state ...the channel elements remains relatively con- stant over the 5-s interval due to the “temporary” nature of the channel ...
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Modeling the Indoor MIMO Wireless Channel
... Modeling the Indoor MIMO Wireless Channel Jon W. Wallace, Student Member, IEEE, and Michael A. Jensen, Senior Member, IEEE Abstract—This paper demonstrates the ability of a physically based statistical ...
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