Title :
Theoretical Capacity Analysis of TH-UWB Systems for Orthogonal Pulse Based Modulation Schemes
Author :
Majhi, Sudhan ; Xiang, W. ; Madhukumar, A.S. ; Premkumar, A.B.
Author_Institution :
Electr. & Comput. Eng., Univ. of Michigan, Dearborn, MI
Abstract :
The paper describes information theoretic capacity of orthogonal pulse based modulation schemes for time hopping ultra wideband (TH-UWB) systems over a multiple access and multipath fading channel. Orthogonal pulse based modulation schemes such as pulse shape modulation (PSM), biorthogonal PSM (BPSM) and a combination of orthogonal pulse position modulation (OPPM) and BPSM have been proposed for reducing inter symbol interference (ISI) and multiple access interference (MAI) as well as for improving system performance. System capacity of TH-UWB systems can be increased by employing these modulations for higher level modulation schemes. The capacity of OPPM-BPSM outperforms PSM and BPSM schemes over a multipath fading channel. The complete mathematical analysis and theoretical simulation results are provided in detail.
Keywords :
fading channels; intersymbol interference; orthogonal codes; pulse modulation; ultra wideband communication; biorthogonal pulse shape modulation; information theoretic capacity; inter symbol interference; multipath fading channel; multiple access channel; multiple access interference; orthogonal pulse based modulation schemes; orthogonal pulse position modulation; time hopping ultra wideband systems; Analytical models; Fading; Intersymbol interference; Mathematical analysis; Multiple access interference; Pulse modulation; Pulse shaping methods; Shape; System performance; Ultra wideband technology;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th
Conference_Location :
Calgary, BC
Print_ISBN :
978-1-4244-1721-6
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2008.416
