Novel Downlink Beamforming Method Using Selective STBC with Common Eigenvectors for MIMO-OFDM Systems(Wireless Communication Technologies)
スポンサーリンク
概要
- 論文の詳細を見る
To achieve a very high data rate within a limited frequency band in orthogonal frequency division multiplexing (OFDM) systems, multi-input multi-output (MIMO) techniques are very promising. Moreover, if a transmitter has the channel state information (CSI), the achievable spectrum efficiency can be maximized using the eigenbeam-space division multiplexing (E-SDM). However, this scheme demands accurate channel estimation. Therefore, in a closed-loop transmission scheme, an increase in the amount of feedback is absolutely necessary for the E-SDM. This paper describes a downlink beamforming method that significantly reduces the amount of feedback needed by using the common transmission weight vectors in all sub-carriers, compared to the amount required for E-SDM. The proposed method also applies transmission diversity to compensate for the quality. The effectiveness of the proposed method was confirmed using computer simulations in both Ricean and Rayleigh fading environments.
- 2006-08-01
著者
-
KUDO Riichi
NTT Network Innovation Laboratories, NTT Corporation
-
Kudo Riichi
Ntt Corporation
-
TAKATORI Yasushi
NTT Corporation
-
NISHIMORI Kentaro
NTT Corporation
-
TSUNEKAWA Koichi
Chubu University
-
Nishimori Kentaro
Niigata University
-
TAKATORI Yasushi
NTT Science and Core Technology Laboratories, NTT Corporation
-
Takatori Yasushi
Ntt Science And Core Technology Laboratories Ntt Corporation
関連論文
- A New User Selection Measure in Block Diagonalization Algorithm for Multiuser MIMO Systems
- Novel Downlink Beamforming Method Using Selective STBC with Common Eigenvectors for MIMO-OFDM Systems(Wireless Communication Technologies)
- New Robust Beamforming Method for Frequency Offsets in Uplink Multiuser OFDM-MIMO(Smart Antennas,2006 International Symposium on Antennas and Propagation)
- New Downlink Beamforming Method for Cooperative Multiple Access Point Systems(Smart Antennas,2006 International Symposium on Antennas and Propagation)
- Frequency Correlation Characteristics Due to Antenna Configurations in Broadband MIMO Transmission(2004 International Symposium on Antennas and Propagation)
- 16×16 MIMO Testbed for MU-MIMO Downlink Transmission
- A New User Selection Measure in Block Diagonalization Algorithm for Multiuser MIMO Systems
- Overlap Frequency-Domain Multiuser Detection for Asynchronous Uplink Multiuser MIMO-OFDM Systems
- Antenna Selection Method for Terminal Antennas Employing Orthogonal Polarizations and Patterns in Outdoor Multiuser MIMO System
- Frequency-Domain Equalization for Coherent Optical Single-Carrier Transmission Systems
- Series-Fed Beam-Scanning Antenna Employing Multi-Stage Configured Microstrip Antennas with Tunable Reactance Devices(2004 International Symposium on Antennas and Propagation)
- A Novel Interference Avoidance Technique on Mobile Wireless Routers Using IEEE802.11n PSMP
- A Stochastic Approach to Design MIMO Antenna with Parasitic Elements Based on Propagation Characteristics
- Transmission History Based Distributed Adaptive Contention Window Adjustment Algorithm Cooperating with Automatic Rate Fallback for Wireless LANs
- Power Saving Control Method for Battery-Powered Portable Wireless LAN Access Points in an Overlapping BSS Environment
- Development of Multi Channel Ad-Hoc Network System
- A Band-Divided Receiver Prototype for Wideband Optical Signals
- Access Control Scheme for Fairness Throughput under Capture Effect and Hidden Terminal Problem