Đề xuất sơ đồ triệt nhiễu trong các hệ thống mimo-ofdm

• Tác giả: Minh Hưng Đào, Văn Đức Nguyễn
• Ngôn ngữ: vie
• Ký hiệu phân loại: 621.384 Radio and radar
• Thông tin xuất bản: Khoa học, 2013
• Mô tả vật lý: 105-113
• Bộ sưu tập: Metadata
• ID: 631901

Tóm tắt

This paper proposes the new interference cancellation technique for MIMO-OFDM (Multiple Input Multiple Out Orthogonal Frequency Division Multiplexing) systems when guard interval is less than the maximum propagation delay of the time varying channel. Proposed scheme based on MMSEV-BLAST (Minimum Mean Square Error Vertical-Bell Labs Layered Space Time) coding associated with the interference cancellation ISI (InterSymbol Interference), ICI (Inter-Carrier Inter-ference) is described. Simulation results on the channel correlation model (One-ring scatterring model) show that performance of system in terms of the symbol error ratio (SER) is significantly improved by applying one iteration of the proposed cancellation technique when SNR ratio is higher than 10 dB.