Exploiting Time Asynchrony in Multi-User Transmit Beamforming
نویسندگان
چکیده
منابع مشابه
Transmit Diversity Vs Beamforming for Multi-User OFDM Systems
In an Orthogonal Frequency Division Multiplexing (OFDM) system, downlink beamforming can be implemented either before IDFT (frequency domain) or after IDFT (time domain) module in a base station transmitter. We denote the former scheme as PreIDFT downlink beamforming, and the latter as Post-IDFT downlink beamforming. In this work, we have compared Pre-IDFT downlink beamforming with Space-Time B...
متن کاملJoint Optimal Power Control and Transmit-Receive Beamforming in a Multi-User MIMO Environment
This master thesis considers joint optimal power control and transmit-receive beamforming for a downlink system in a multi-user MIMO (Multiple Input Multiple Output) environment. The goal of the transmit strategy presented here is to minimize the total transmitted power subject to some desired Quality of Service criteria, which are based on the operator’s perspective. This results in a multi-va...
متن کاملRandom Beamforming in Multi – User MIMO Systems
Wireless communication paradigm has evolved from single-user single-input single-output (SISO) and multiple-input multiple-output (MIMO) systems to multi-user (MU) MIMO counterparts, which are shown greatly improving the rate performance by transmitting to multiple users simultaneously. The sum-capacity and the capacity region of a single-cell MU MIMO downlink system or the so-called MIMO broad...
متن کاملSlotted Aloha with multi-AP diversity and APS transmit beamforming
Slotted Aloha is an effective random access protocol and can also be an important element of more advanced media access protocols. This paper investigates slotted Aloha in a radio environment with multiple access points. Specifically, we examine the impact of multi-access-point (multi-AP) diversity on the performance of slotted Aloha. The paper considers both omni-directional (OM) and beamformi...
متن کاملTransmit Beamforming in Relayed Multicast Systems
In this work the gains from the addition of a single antenna relay in a multicasting system with transmitter beamforming are studied. Different solutions to the problem of maximizing the minimum user SNR with varying trade-offs between performance and complexity are taken from the literature and studied in two relaying scenarios. One scheme represents the classic setup without using the relay w...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Wireless Communications
سال: 2020
ISSN: 1536-1276,1558-2248
DOI: 10.1109/twc.2020.2970910