Title :
Multicarrier modulation for advanced messaging systems
Author :
Okrah, Peter ; Newhouse, Michael ; Stuck, Gary
Author_Institution :
Semicond. Products Sector, Motorola Inc., Tempe, AZ, USA
Abstract :
This paper proposes the use of multicarrier modulation (MCM) based on IFFT/FFT (Fourier transform) transmitter and receiver pair as a method of implementation for advanced messaging systems. This includes one-way paging, and two-way messaging systems. The proposed MCM system provides immunity against multipath fading distortion. It also provides immunity against intersymbol interference (ISI) caused by long delays spreads that usually occur in simulcast systems. In addition, the MCM system achieves a high quality transmission with good spectral efficiency, better than current messaging systems
Keywords :
OFDM modulation; delays; fading; fast Fourier transforms; intersymbol interference; inverse problems; multipath channels; paging communication; radio receivers; radio transmitters; Fourier transform; IFFT/FFT receiver; IFFT/FFT transmitters; ISI immunity; MCM system; OFDM; advanced messaging systems; delay spreads; discrete multitone; intersymbol interference; inverse discrete Fourier transform; multicarrier modulation; multipath fading distortion; one-way paging; simulcast systems; spectral efficiency; two-way messaging systems; Bandwidth; Communications technology; Delay effects; Fading; Filters; Intersymbol interference; OFDM modulation; Quadrature amplitude modulation; Radio transmitters; Throughput;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686155
