Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Phương pháp truy cập nhiều kênh với phân chia tần số xen kẽ cho hiệu suất năng lượng, độ ổn định, tính linh hoạt và khả năng mở rộng
Tóm tắt
Giải pháp truy cập đa kênh trong hệ thống radio di động IMT-Advanced phải đáp ứng các yêu cầu thách thức như thông lượng cao, độ trễ thấp, tính linh hoạt cao, độ ổn định tốt, độ phức tạp tính toán thấp và hiệu suất năng lượng cao, đặc biệt là trong liên kết lên. Trong bài báo này, một sơ đồ truy cập đa kênh mới cho liên kết lên được gọi là B-IFDMA được trình bày. Chúng tôi cho thấy sơ đồ này có khả năng cung cấp hiệu suất tỷ lệ lỗi tương đương hoặc tốt hơn so với các sơ đồ Truy cập Đa kênh Phân chia Tần số Một kênh (SCFDMA) IFDMA và LFDMA, khi xem xét hiệu suất ước lượng kênh thực tế tại đầu thu và không có thông tin trạng thái kênh đáng tin cậy tại đầu phát. Chúng tôi cũng chứng minh rằng B-IFDMA cung cấp hiệu suất khuếch đại tốt hơn so với OFDMA và có thể cung cấp hiệu suất năng lượng đầu cuối tốt hơn so với IFDMA và LFDMA. Hơn nữa, sơ đồ này cho thấy độ ổn định cao đáng khích lệ với các độ lệch tần số và độ trải rộng Doppler. Do đó, sơ đồ này có thể được coi là một giải pháp hứa hẹn cho liên kết lên của các hệ thống radio di động trong tương lai.
Từ khóa
#truy cập đa kênh #B-IFDMA #hiệu suất năng lượng #độ ổn định #tính linh hoạt #khả năng mở rộngTài liệu tham khảo
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