A 10W Low Cost OFDM Transceiver (LCOT)

Abstract

Increasing demand for higher data throughput coupled with limitations on available spectrum has motivated several efforts focused on the development of new higher efficiency waveforms for use in the challenging aeronautical telemetry environment. The OFDM waveform uses space, frequency and time diversity, as well as innovative signal processing techniques to achieve five times the spectral efficiency of legacy PCM/FM while maintaining a similar detection efficiency. There is a strong need for greater channel capacity. The technical challenge involves the generation of complex LDPC codes, generation of OFDM modulation signal, and generation of a 10 W high PAPR amplifier inside a small and ruggedized enclosure. The NASA Low Cost TDRSS Transceiver (LCT2) platform solves this technical challenge by using state of the art COTS RF devices for the analog front and back ends, and by incorporating a Field Programmable Gate Array (FPGA) as its main digital signal processing engine.

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Document Details

Document Type
Technical Report
Publication Date
Feb 19, 2013
Accession Number
ADA579305

Entities

People

  • Pallavi Sandhiya

Organizations

  • Air Force Test Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Amplifiers
  • Channel Capacity
  • Demographic Cohorts
  • Digital Signal Processing
  • Efficiency
  • Field Programmable Gate Arrays
  • Frequency
  • Modulation
  • Networks
  • Orthogonal Frequency Division Multiplexing
  • Platforms
  • Power Amplifiers
  • Radio Frequency Devices
  • Signal Processing
  • Transceivers
  • Transmitters

Fields of Study

  • Engineering

Readers

  • Distributed Systems and Data Platform Development
  • Integrated Circuit Design and Technology.
  • Radio communications and signal processing.

Technology Areas

  • Space