Description: 做多用户检测的一些经典实用的仿真程序与大家分享了，有仿真结果，有备注易懂。-To do some of the classic multi-user detection practical simulation program to share with you, and there are simulation results, there are Notes easy to understand. Platform: |
Size: 54272 |
Author:李遥 |
Hits:
Description: Flexible Interference Control, Interference Avoidance, Interference Exploitation, Interference Cancellation, Multi User MIMO, Coordinated Multi Point, Beamforming, Joint Processing-This deliverable collects proposals for the implementation of Flexible Interference Control concepts, that combine interference avoidance and interference exploitation innovations to support enhanced system performance. A classification of WP1 and WP2 innovations is used to come up with concept identifications based on a structured methodology. The deliverable also provides results on the impact of constrained backhaul infrastructure on the performance of a joint processing scheme for the uplink. Platform: |
Size: 1985536 |
Author:yangziyuan |
Hits:
Description: In a multiple transmit antenna, single antenna per receiver downlink channel with limited channel state feedback, we consider the following question: given a constraint on the total system-wide feedback load, is it referable to get low-rate/coarse channel feedback from a large number of receivers or high-rate/high-quality feedback from a smaller number of receivers? Acquiring feedback from many receivers allows multi-user diversity to be exploited, while high-rate feedback allows
for very precise selection of beamforming directions. We show that there is a strong preference for obtaining high-quality feedback, and that obtaining near-perfect channel information from as many receivers as possible provides a significantly larger sum rate than collecting a few feedback bits from a large number of users. Platform: |
Size: 2106368 |
Author:xinpha |
Hits:
Description: 采用多天线的认知无线电系统相对于单天线认知无线电系统，既有传统的资源（频域，时域，码域），又有空域资源。本文研究基于博弈论的有限反馈认知MIMO系统的资源分配，涉及发射功率、空域（采用波束成形）和反馈速率等资源的分配。利用有限的反馈信道反馈量化的信道状态信息(CSI)，基于量化CSI，本文主要研究联合功率分配与波束成形优化、次用户（认知用户或非授权用户）反馈速率控制、联合功率分配与反馈速率控制等相关资源分配问题。-Multi-antenna cognitive radio system with respect to a single antenna cognitive radio systems, both traditional resource (frequency domain, time domain, code domain), there airspace resources. In this paper, a limited resource allocation game theory of cognitive MIMO system based on feedback, involving the launch distribution power, airspace (using beam-forming) and feedback rate and other resources. With limited feedback channel feedback quantized channel state information (CSI), based on quantified CSI, this paper studies the joint power allocation and beamforming optimization, secondary users (cognitive user or unauthorized user) feedback rate control, joint power allocation and feedback rate control and other issues related to resource allocation. Platform: |
Size: 52224 |
Author:sunjing |
Hits:
Description: If SDMA is used on the downlink of a multi-user MIMO system,
either long-term or short-term channel state information
has to be available at the base station (BS) to faciliate the joint
precoding of the signals intended for the different users. Precoding
is used to efficiently eliminate or suppressmulti-user interference
(MUI) via beamforming or by using ”dirty-paper”
codes. It also allows us to performmost of the complex processing
at the BS which leads to a simplification of the mobile terminals.
In this paper, we provide an overview of efficient linear
and non-linear precoding techniques formulti-userMIMO
systems. The performance of these techniques is assessed via
simulations on statistical channelmodels, and on channels generated
by the IlmProp, a geometry-based channel model that
generates realistic correlations in space, time, and frequency. Platform: |
Size: 74752 |
Author:ImranKhan |
Hits:
Description: We present a novel beamforming technique for
multi-user indoor wireless communications called regularized
time-reversal (RTR). A comparison with other time-reversal
techniques is provided with respect to bit error rate and spatial
focusing performance in mm-wave massive MIMO systems. We
verify that the proposed technique can be used for space-division
multiple access in such scenarios. Platform: |
Size: 397312 |
Author:hadjidw |
Hits:
Description: We present a novel beamforming technique
for multi-user frequency-selective indoor channels called
interference-nulling time-reversal (INTR). The beamformer is
implemented with a pre-filter designed to minimize the interuser
interference present in conventional time-reversal (TR).
Moreover, our technique relies on a large number of antennas at
the transmitter to mitigate inter-symbol interference, enabling
low computational complexity receivers. We demonstrate that
INTR outperforms previous TR techniques with respect to
average bit error rate per user and achievable sum rate. Thus,
INTR can be used for space division multiple access in no-Iine-ofsight
mm-wave massive MIMO, providing remarkable diversity
and multiplexing gains. Platform: |
Size: 360448 |
Author:hadjidw |
Hits:
Description: Millimeter wave (mmWave) systems will likely employ directional beamforming with large antenna arrays at both the
transmitters and receivers. Acquiring channel knowledge to
design these beamformers, however, is challenging due to the
large antenna arrays and small signal-to-noise ratio before
beamforming. In this paper, we propose and evaluate a downlink system operation for multi-user mmWave systems based
on compressed sensing channel estimation and conjugate
analog beamforming. Adopting the achievable sum-rate as a
performance metric, we show how many compressed sensing
measurements are needed to approach the perfect channel
knowledge performance. Platform: |
Size: 1032192 |
Author:hadjidw |
Hits:
Description: The performance of multi user MIMO can verfied using channel inversion and regularized channel inversion Platform: |
Size: 11052 |
Author:Neelima |
Hits:
Description: 研究能量受限的SWIPT无线通信网络中，基站采用MIMO多天线发送信号给用户节点，在有窃听节点的情况下，通过联合优化发射波束形成矢量、人工噪声协方差和接收PS比来最小化总发射功率，同时保证每个接收机的个体保密率和能量收集约束。(In the energy limited swipt wireless communication network, the base station uses MIMO multi antenna to send signals to user nodes. In the case of eavesdropping nodes, the total transmit power is minimized by jointly optimizing transmit beamforming vector, artificial noise covariance and receive PS ratio, while ensuring the individual confidentiality rate and energy collection constraint of each receiver.) Platform: |
Size: 5120 |
Author:herain |
Hits:
Search - multi user beamforming