This document delves into the intricacies of Coordinated Beamforming (Co-BF) and MU-MIMO techniques in the context of IEEE 802.11-23/1998r0 standard. It explores the concept of nulling in Co-BF, handling more Rx antennas than streams, Zero-Forcing precoding to eliminate Multi-User Interference (MUI)

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Explore the latest innovations in simple multigraph convolution networks presented by Xinjie Shen from South China University of Technology. The research evaluates existing methods, such as PGCN, MGCN, and MIMO-GCN, and introduces novel techniques for building credible graphs through subgraph-level

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Explore the RAN Release 18 package which includes RAN1-led, RAN2-led, and RAN3-led projects focusing on a variety of enhancements for next-generation networks. Projects cover areas such as MIMO evolution, AI/ML, NR positioning, network energy savings, mobility enhancements, IoT support, and more. Di

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This research focuses on rate optimization in wideband RIS-assisted wireless systems, specifically investigating MIMO RIS-assisted systems in sub-6 GHz mmWave settings. Pathloss and blockage modeling, along with LOS vs. spectral efficiency and RIS-UE distance vs. spectral efficiency analyses, are ke

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In January 2020, a discussion took place on the allocation of multiple Resource Units (RUs) to a single Station (STA) in the IEEE 802.11be standard. The proposal suggested categorizing RUs into small and large types, avoiding aggregation across multiple 20MHz channels. It emphasized assigning a sing

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The 3GPP TSG-RAN.WG4 Meeting discussed approval for the NR MIMO OTA workplan, addressed FR2 blocking issues, and emphasized the use of polarized antenna models. Updates were made to the power validation procedure and gNB beams usage criteria for FR1 MIMO OTA channel model validation. Collaboration w

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Enabling MIMO in mmWave technology is essential for improving throughput performance. While IEEE 802.11ad supports single-stream communications, 802.11ay introduces SU-MIMO, MU-MIMO, and hybrid beamforming. This document discusses the necessity of MIMO in IMMW and explores various MIMO options for e

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Discussion on reducing channel acquisition overhead to support 16 Spatial Stream MIMO and Multi-AP coordination in IEEE 802.11be. Methods include limiting feedback information, using implicit feedback in reciprocal systems, and improving explicit and implicit feedback schemes.

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This document discusses the evaluation of IEEE 802.11ax technology in the context of the IMT-2020 Enhanced Mobile Broadband (eMBB) Dense Urban test environment. It analyzes the performance of 802.11ax in meeting the key PHY/MAC metrics required for eMBB Dense Urban scenarios, such as Peak Spectral E

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The electronic meeting of 3GPP TSG-RAN-WG4 discussed new proposals for RF requirements enhancement in Rel-17, focusing on 2Tx-2Tx switching between carriers and power boosting for UL CA. The meeting addressed switching period lengths, DL interruption applicability, UE capabilities, and MIMO support

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Delve into the world of 5G smartphone RF front end technology covering aspects like 4G/5G dual connectivity, path loss in radio links, frequency plan, channel capacity, front end architecture, MIMO modules, envelope tracking power amplifier, and more. Discover the features of 5G RF front end includi

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This document discusses the architecture and capabilities of intra-band contiguous UL carrier aggregation, focusing on issues related to multiple transmit chains, MIMO support, and potential MPR improvements. It also covers topics like ACLR MBW position, inner and outer contiguous allocation definit

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This document from January 2021 discusses considerations and test results related to IEEE 802.11 MU-MIMO (Multi-User Multiple Input Multiple Output) technology. It covers field test results, test setups, test scenarios, observations, and conclusions regarding supported NSS (Number of Spatial Streams

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The document outlines tentative agreements for the enhancement of UE power/coverage through body proximity sensing in the 3GPP meeting. It discusses the completion of Phase I study and initiation of Phase II work, specifying UL gap configurations, interruption requirements, UE capabilities, and test

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The document discusses spatial stream allocation in IEEE 802.11-20 trigger frames, specifically focusing on the SS Allocation subfield. It explains how trigger frames allocate resources for TB PPDU transmissions and solicit User Info fields, detailing the RU Allocation and SS Allocation subfields. T

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The document discusses the focus on improving energy efficiency in the IEEE 802.11 HEW standard to enhance the performance of wireless networks, aiming to complement LTE-based mobile networks. It emphasizes real-world spectrum efficiency enhancements and throughput improvements, particularly in indo

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Insights from a 2009 FCC field broadband hearing reveal the growing reliance on mobile internet access in the U.S. The discussion covers the limitations of current technology, the need for more spectrum, advances like MIMO and network coding, and potential solutions for improved connectivity. The fo

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In this document, Dzevdan Kapetanovic from Ericsson discusses the limitations of standard DL MU-MIMO precoding for BPSK and proposes enhanced precoding and decoding methods for better performance. By applying these strategies to complex-valued alphabets, significant improvements are observed based o

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MIMO transmission in IEEE 802.11ay supports up to 8 data streams with a focus on SU-MIMO. The need for efficient rank adaptation procedures and corresponding signaling mechanisms is highlighted. The document addresses rank adaptation procedures, example implementations, challenges faced, and propose

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This document covers the discussion on PDSCH demodulation parameters and requirements for UE demodulation and CSI reporting in FR2 DL 256QAM, specifically focusing on static channel mode, TDL-D channel mode, and TDL-A channel mode. The document also explores rank options, channel bandwidth, PRB allo

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Proposed changes to address load balancing issues in dense 802.11ax scenarios by introducing a new information element for BSS Load. The new element considers OFDMA utilization, UL/DL MU-MIMO, and allows for future extensions to ensure efficient AP selection by unassociated STAs. Enhancements aim to

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During the 3GPP TSG-RAN-WG4#95-e meeting, discussions were held on power class requirements, UL MIMO, and other related topics. The meeting covered various options for setting up TxD requirements, focusing on Release 16 independence, UL MIMO emission requirements for R15, NSA NR power class clarific

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IEEE 802.11ay introduces improvements in beamforming training procedures for efficiency and MIMO support. The multi-stage, multi-resolution beamforming training framework enhances beamforming efficiency with high-resolution beams. The proposal includes a Sector Sweep frame and support for up to 2048

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This research focuses on utilizing hybrid analog/digital codebooks for beam training in millimeter-wave (mmWave) systems, addressing the need for efficient channel estimation and high directivity at mmWave frequencies. The study discusses system models, proposed training algorithms, codebook designs

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In September 2016, a proposal was introduced to enhance the beamforming training procedures in IEEE 802.11ay for increased efficiency and MIMO support. The proposal suggests a multi-stage, multi-resolution beamforming training framework to improve efficiency in scenarios with high-resolution beams a

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This document discusses the impact of Tx EVM on MIMO detection, highlighting that improving Tx EVM can achieve theoretical gains in nonlinear detection. It addresses questions raised during discussions and presents an optimal detector scenario in the presence of colored noise from Tx EVM. Simulation

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Approval agenda items discussed in the 3GPP TSG-RAN WG4 #99-e meeting included enhancements for UL gap for FR2, issues related to Tx power management, recommendations on RAN configurations, and coherent UL MIMO. The documents and images shared highlight key agreements and discussions on various topi

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The document discusses enhancements in UL Tx power management for FR2 spectrum bands, focusing on gap calibration prioritization, P-MPR reporting for BPS-based management, and RRM aspects of UL gap configurations. The agreements and decisions made by RAN4 are outlined, along with considerations for

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In this lecture, we covered topics such as Spread Spectrum Modulation, Direct Sequence Spread Spectrum (DSSS), Interference Rejection, RAKE Receiver, and Multiuser Systems. The review of the previous lecture focused on OFDM design issues, including timing and frequency offset, peak-to-average power

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Proposal discusses the suitability of MIMO for IMMW transmission under different scenarios. The analysis focuses on the number of spatial streams based on channel rank and quality, recommending dual-polarization for LOS paths supporting 2 spatial streams and spatial separation for larger devices sup

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Delve into enhancing reliability in next-generation WiFi networks through optimization strategies focusing on key areas like MIMO/TXBF concerns, throughput/data rate improvements, and reducing overhead feedback. Explore ways for the WiFi community to collaboratively address existing challenges and i

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The study explores energy-efficient relay antenna selection for AF MIMO two-way relay channels, aiming to optimize energy efficiency while maintaining performance. It discusses the advantages and disadvantages of two-way MIMO relay systems, emphasizing higher spectral efficiency, improved reliabilit

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