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A data modem for GSM adaptive multi rate voice channel

Boloursaz, M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1109/EWDTS.2013.6673152
  3. Publisher: 2013
  4. Abstract:
  5. This paper considers the problem of digital data transmission through the Global System for Mobile communications (GSM). A data modem is presented that utilizes codebooks of Speech-Like (SL) symbols to transmit data through the GSM Adaptive Multi Rate (AMR) voice codec. Using this codebook of finite alphabet, the continuous vocoder channel is modeled by a Discrete Memory less Channel (DMC). A heuristic optimization algorithm is proposed to select codebook symbols from a database of observed human speech such that the capacity of DMC is maximized. Simulation results show that the proposed data modem achieves higher data rates and lower symbol error rates compared to previously reported results while requiring lower computational complexity for codebook optimization
  6. Keywords:
  7. Adaptive multi rates ; Codebook optimization ; Digital data transmission ; Discrete memory ; Finite alphabet ; Global system for mobile communications (GSM) ; Heuristic optimization algorithms ; Symbol error rate (SER) ; Algorithms ; Global system for mobile communications ; Optimization ; Modems
  8. Source: Proceedings of IEEE East-West Design and Test Symposium, EWDTS 2013 ; 2013 ; 9781479920969 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6673152