Title :
A sub-channel selective orthogonal frequency division multiplexing spread spectrum system
Author :
Seyedi, Alireza ; Saulnier, Gary J.
Author_Institution :
Dept. of Electr. Comput. & Syst. Eng., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
We propose a sub-channel selective OFDM-SS system, which implements a sub-optimal, constant power water-filling. The maximal ratio combining weights are used as channel side information. The use of a distributed algorithm removes the need to collect all the data at the base station. The performance of this system is studied and compared to the exact water-filling and conventional OFDM-SS system through simulation for single and multi-user (CDMA) cases.
Keywords :
OFDM modulation; code division multiple access; distributed algorithms; fading channels; interference suppression; jamming; mobile radio; multipath channels; resource allocation; spread spectrum communication; CDMA; OFDM-SS system; constant power water-filling; distributed algorithm; fading; interference rejection; jamming; maximal ratio combining weights; mobility; multipath; orthogonal frequency division multiplexing; power allocation technique; radio resource allocation; selective system; spread spectrum system; sub-channel system; Base stations; Distributed algorithms; Diversity reception; Fading; Interference; Multiaccess communication; OFDM; Signal to noise ratio; Spread spectrum communication; Wireless communication;
Conference_Titel :
Military Communications Conference, 2001. MILCOM 2001. Communications for Network-Centric Operations: Creating the Information Force. IEEE
Print_ISBN :
0-7803-7225-5
DOI :
10.1109/MILCOM.2001.986079
