A Study on Adaptive Subcarrier Bandwidth in MC-CDMA Systems

[[abstract]]這篇論文提出一個嶄新的多重接取技術於多載波分碼多重接取系統，每一個傳送的符元均被載在多個窄頻的子載波上。每個子載波會根據不同的展頻碼，乘上不同的相位，0或 。傳統上每位使用者所使用的子載波寬度是一樣的，然而在這篇論文中我們採用每位使用者可選擇不同寬度的子載波，以此方法在特定的位元錯誤率限制下，達到較佳的傳輸率。[[abstract]]This paper proposed a novel digital multiple access techniques in Multi-Carrier Code Division Multiple Access (MC-CDMA) systems where each data symbol is transmitted at multiple narrowband subcarriers. Each subcarrier is encoded with a phase offset of 0 or based on a spreading code. In traditional MC-CDMA systems, the subcarrier bandwidths of all users are the same. In this paper we allowed that each user can select different subcarrier bandwidth to get higher throughput with target bit error rate (BER) requirement.[[note]]碩