Title :
Airframe extension for cellular OFDM systems utilizing direct-spread OFDM slots
Author :
Wakutsu, Takashi ; Tsurumi, Hiroshi
Author_Institution :
Mobile Commun. Lab., Toshiba Corp., Kawasaki, Japan
Abstract :
This paper presents an extended airframe format in order to realize a flexible cellular configuration, under a severe frequency reuse condition, in particular using only one frequency. This extension can be easily applied to next-generation OFDM systems. Additionally, channel interference scenarios due to the peculiar cell structure of the proposed extension-the cells are deployed so that the direct-spread (DS) areas are overlapped-are discussed. The impact of the introduction of DS slots is also investigated
Keywords :
OFDM modulation; cellular radio; frequency allocation; interference suppression; radiofrequency interference; OFDM systems; airframe extension; cellular radio systems; channel interference scenarios; direct-spread OFDM slots; extended airframe format; flexible cellular configuration; severe frequency reuse condition; Base stations; Context-aware services; Data communication; Downlink; Frequency conversion; Mobile communication; Mobile computing; Mobile handsets; OFDM modulation; Web and internet services;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.936980
