Comparison of Frequency and Time Domain Differential Modulation in an OFDM System for Wireless ATM
Authors: Lott, Matthias
Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University
: publications@comnets.rwth-aachen.de
In 49th IEEE Vehicular Technology Conference (VTC`99), p.p. 877-883, Houston, Texas, USA, 1999.
Publication Date: May, 1999
On page(s):877-883
ISBN:
Abstract Wireless ATM systems at 5.2 GHz will use OFDM as transmission scheme to combat the frequency selective radio channel. Differential modulation, e.g. DQPSK, is proposed in combination with OFDM that provides a cost-effective solution without the need for equalization. Depending on whether the differential modulated symbols are placed on the same sub-carrier of adjacent OFDM symbols or on different sub-carriers of the same OFDM symbol time domain and frequency domain modulation can be distinguished. Based on new closed-form BER expressions for OFDM/DQPSK transmission schemes with frequency and time domain differential modulation the performance with regard to the radio channel characteristic and the protocols for wireless ATM at 5.2 GHz are investigated.
Author Keywords
Bibtex
@INPROCEEDINGS{Lo-VTC99_1,
AUTHOR = {Lott, M.},
TITLE = {Comparison of Frequency and Time Domain Differential Modulation in an
OFDM System for Wireless ATM},
JOURNAL = {49th IEEE Vehicular Technology Conference (VTC`99)},
YEAR = {1999},
MONTH = {May},
VOLUME = {0},
PAGES = {877-883},
ADDRESS = {Houston, Texas, USA},
AFFILIATION = {Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University},
ANNOTE = {Orthogonal Frequency Division Multiplexing (OFDM), wireless ATM, bit
error ratio (BER), analytical description, closed form expression model
for protocol simulations, channel model, tapped-delay line, WSSU},
URL = {https://www.comnets.rwth-aachen.de}
}