Distributed Scheduling Algorithm for Multiuser MIMO Downlink with Adaptive Feedback

نویسندگان

  • Zhao Li
  • Jiawei Yang
  • Junliang Yao
چکیده

We propose a distributed scheduling algorithm for multiuser MIMO downlink with adaptive feedback. In this algorithm each mobile station (MS) selects transmission scheme, including beamforming (BF) and spatial multiplexing (SM) according to its channel state and then feeds back channel state information (CSI) adaptively. The base station (BS) receives CSI from each MS and selects user subset based on minimum spatial correlation criteria or system capacity maximization. The proposed user scheduling algorithm is carried out by MSs and BS corporately. The system feedback load depends on each MS’s channel state. Compared with existing schemes the proposed algorithm can achieve high system capacity as well as good BER performance.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Capacity-approaching data transmission in MIMO broadcast channels

This dissertation focuses on downlink multi-antenna transmission with packet scheduling in a wireless packet data network. The topic is viewed as a critical system design problem for future high-speed packet networks requiring extremely high spectral efficiency. Our aim is to illustrate the interaction between transmission schemes at the physical layer and scheduling algorithms at the medium ac...

متن کامل

Adaptive Subcarrier Assignment and Power Distribution in Multiuser OFDM Systems with Proportional Data Rate Requirement

A low complexity dynamic subcarrier and power allocation methodology for downlink communication in an OFDM-based multiuser environment is developed. The problem of maximizing overall capacity with constraints on total power consumption, bit error rate and data rate proportionality among users requiring different QOS specifications is formulated. Assuming perfect knowledge of the instantaneo...

متن کامل

A Limited Feedback SDMA for Downlink of Multiuser MIMO Communication System

This paper proposes a limited feedback SDMA scheme of combining opportunistic scheduling and codebook-based multiuser precoding. A new systematic construction for SDMA codebook, which comprises a set of precoders for multiple simultaneously active users, is first presented. Different from conventional Grassmannian codebook, the proposed codebook is designed in terms of array processing and has ...

متن کامل

Recent advances in multiuser MIMO systems

We would like to welcome you to the Special Issue on Recent Advances in Multiuser MIMO Systems of the EURASIP Journal on Wireless Communications and Networking (JWCN). This issue has collected several research results on various aspects of multiuser MIMO systems including resource allocation, precoding and detection algorithms, limited feedback techniques and network MIMO. MIMO is a key technol...

متن کامل

A Codebook-Based Limited Feedback System for Large-Scale MIMO

In this paper, we consider limited feedback systems for FDD large-scale (massive) MIMO. A new codebook-based framework for multiuser (MU) MIMO downlink systems is introduced and then compared with an ideal non-codebook based system. We are particularly interested in the less-known finiterate feedback regime where the number M of transmit antennas and the number of users are of the same order of...

متن کامل

ذخیره در منابع من

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • JCM

دوره 4  شماره 

صفحات  -

تاریخ انتشار 2009