用户流量在OFDM下行链路上复用

Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738) Pub Date : 2004-08-30 DOI:10.1109/ISSSTA.2004.1371736

B. Popović, J. van de Beek

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引用次数: 1

摘要

提出并评估了一种用于OFDM蜂窝系统下行链路的用户业务复用方案。该方案基于从一般Costas序列中获得的正交时频(T-F)模式集。基于整个正交T-F图集的随机可变循环时间偏移的小区间干扰平均方法也是该方案的一部分。根据特定于蜂窝的多层伪随机序列，在每个传输时间间隔内改变时间偏移量。因此，小区间的OFDM干扰变得有限和无噪声，而不需要在系统级进行资源规划。

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User traffic multiplexing on OFDM downlink

A user traffic multiplexing scheme for the downlink of an OFDM cellular system is proposed and evaluated. The scheme is based on the set of orthogonal time-frequency (T-F) patterns obtained from a generic Costas sequence. An intercell interference averaging method, based on a randomly variable cyclic time offsetting of the whole set of orthogonal T-F patterns, is also part of the scheme. The time offset is changed for each transmission time interval, according to a cell-specific multilevel pseudo-random sequence. Thus, the intercell OFDM interference becomes limited and noise-like, while no resource planning on the system level is required.

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Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738)

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