PHÂN TÍCH HIỆU NĂNG CỦA GIAO THỨC MIMO TAS/SC SỬ DỤNG MÃ FOUNTAIN TRÊN CÁC KÊNH FADING RAYLEIGH PERFORMANCE ANALYSIS OF MIMO TAS/SC PROTOCOLS USING FOUNTAIN CODES OVER RAYLEIGH FADING CHANNELS

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Tác giả: Đức Tuấn Nguyễn, Thạc Dũng Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Trường Đại học Bạc Liêu, 2024

Mô tả vật lý: tr.2

Bộ sưu tập: Metadata

ID: 483048

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ABSTRACT In this paper, we analyze performance of multiple input multiple output (MIMO) protocols ex ploiting Fountain Codes (FCs), where a transmitter (Alice) is equipped with multi-antennas using transmit antenna selection (TAS) technique to transmit its encoded packets to a legitimate receiver (Bob) in the presence of an eavesdropper (Eve). Moreover, both Bob and Eve nodes are equipped with multi-antenna receiver using selection combining (SC) method to decode the original information which is transmitted by Alice. To evaluate the performance of the proposed secure communication protocols, the article presents exact closed-form expressions for the success decoding probability and security performance (SS). To enhance security performance, the transmit power at A must be significantly reduced to degrade the eavesdropper's link quality. The paper also provides the interception probability (IP) and the average number of encoded packets (AP) over Rayleigh fading channels. To improve security performance, the appropriate number of antennas must be designed for both A and B. Moreover, power allocation at A should be optimized to transmit only the necessary amount required to block E, the entity attempting to eavesdrop on the original data from A. Finally, Monte Carlo simulations are conducted to verify the theoretical results. TÓM TẮT Trong bài báo này phân tích hiệu năng của các giao thức MIMO sử dụng mã Fountain (FCs), trong đó một máy phát (Alice) được trang bị nhiều anten sử dụng kỹ thuật lựa chọn anten phát (TAS) để truyền các gói mã hóa đến một máy thu hợp pháp (Bob) trong bối cảnh có kẻ nghe trộm (Eve). Hơn nữa, cả Bob và Eve đều được trang bị máy thu nhiều anten sử dụng phương pháp kết hợp lựa chọn (SC), để giải mã thông tin gốc được truyền bởi Alice. Để đánh giá hiệu năng của các giao thức truyền thông bảo mật được đề xuất, bài báo đưa ra các biểu thức dạng đóng chính xác của xác suất giải mã thành công và bảo mật (SS) để cải thiện hiệu suất bảo mật, cần giảm đáng kể công suất phát tại A để giảm chất lượng liên kết của kẻ nghe lén
xác suất chặn (IP), và số lượng trung bình các gói mã hóa (AP) trên các kênh fading Rayleigh. Để cải thiện hiệu suất bảo mật cần thiết kế số lượng anten phù hợp cho cả A và B. Hơn nữa, việc phân bổ công suất tại A chỉ cần phát đủ mức cần thiết để ngăn chặn E, người cố gắng nghe lén dữ liệu gốc từ A. Sau đó, các mô phỏng Monte Carlo được thực hiện để kiểm chứng các kết quả lý thuyết.

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