Wideb and width baseband communication: Fact or fiction?

Tapan K. Sarkar, Magdalena Salazar-Palma

Research output: Chapter in Book/Entry/PoemConference contribution


There are two different ways to communicate with wide bandwidth signals. One is to take a signal with a very narrow instantaneous bandwidth and use a frequency hop technique as being currently used in a CDMA type of environment to generate a wideband signal. This is easy to implement and currently being done for transmission and reception of signals which have small instantaneous bandwidth. The other approach is to deal directly with transmitting a wide baseband signal. For wide baseband data transmission, like signals from computers, the instantaneous bandwidth is very large. The point of this paper is that antennas are highly dispersive devices and their impulse responses must be taken into account in the design of any system which plans to transmit a wide baseband signal. Without taking the antenna effects into account, the wide transmitted baseband signals are quite meaningless. Simple expressions are derived to illustrate that even a point source type of antenna which is virtually nonexistent produces a severe distortion to the signal. The objective of this paper is to bring out the importance of antenna in any wide baseband type of transmission. Also, it is important to note that the transmit waveform is not equal to the receive waveform so the reciprocity of the antenna patterns do not hold in the time domain!.

Original languageEnglish (US)
Title of host publication2003 IEEE Topical Conference on Wireless Communication Technology
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)0780381963, 9780780381964
StatePublished - 2003
EventIEEE Topical Conference on Wireless Communication Technology - Honolulu, United States
Duration: Oct 15 2003Oct 17 2003

Publication series

Name2003 IEEE Topical Conference on Wireless Communication Technology


OtherIEEE Topical Conference on Wireless Communication Technology
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Control and Systems Engineering


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