All-digital impulse radio for MUI/ISI-resilient multi-user communications over frequency-selective multipath channels

C. J. Le Martret, G. B. Giannakis

Research output: Contribution to conferencePaperpeer-review

12 Scopus citations

Abstract

Impulse radio (IR) is an ultra-wideband system with attractive features for baseband asynchronous multiple access (MA), multimedia services, and tactical wireless communications. Implemented with analog components, the continuoustime IRMA model utilizes pulse-position modulation (PPM) and random time-hopping codes to alleviate multipath effects and suppress multiuser interference (MUI). We introduce a novel continuous-time Multiple Input Multiple Output (MIMO) PPM-IRMA scheme, and derive its discrete-time equivalent model. Relying on a time-division-duplex access protocol and orthogonal user codes, we design composite linear and non-linear receivers for the downlink. The linear step eliminates MUI deterministically and accounts for frequency-selective multipath, while a Maximum Likelihood (ML) receiver performs symbol detection.

Original languageEnglish (US)
Pages655-659
Number of pages5
StatePublished - Dec 1 2000
Event21st Century Military Communications Conference Proceedings MILCOM 2000 - Los Angeles, CA, United States
Duration: Oct 22 2000Oct 25 2000

Other

Other21st Century Military Communications Conference Proceedings MILCOM 2000
CountryUnited States
CityLos Angeles, CA
Period10/22/0010/25/00

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