Sökning: "rate compatible punctured convolutional RCPC codes"

Hittade 3 avhandlingar innehållade orden rate compatible punctured convolutional RCPC codes.

  1. 1. Multirate Codes and Multicarrier Modulation for Future Communication Systems

    Detta är en avhandling från Chalmers University of Technology

    Författare :Pål Frenger; Chalmers tekniska högskola.; Chalmers University of Technology.; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; multicarrier modulation; OFDM; channel estimation; parallel combinatory signaling; convolutional codes; optimum distance spectrum ODS ; rate-compatible punctured convolutional codes RCPC-codes ; nested convolutional codes; code-spread CDMA; rate matching; DS-CDMA; interference cancellation; turbo decoding; Rayleigh fading;

    Sammanfattning : In this thesis, new detection and modulation methods for multicarrier systems are presented. The proposed multicarrier detectors are based on feedback of previously detected symbols and the idea is to exploit the correlation, both in time between consecutive symbols, and in frequency between neighboring sub-carriers. LÄS MER

  2. 2. Channel Coding and Multiuser Detection for CDMA and Wireless Communications

    Detta är en avhandling från Chalmers University of Technology

    Författare :Pål Orten; Chalmers tekniska högskola.; Chalmers University of Technology.; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; optimum distance spectrum ODS ; rate compatible punctured convolutional RCPC codes; nested convolutional codes; low-rate convolutional codes; code-division multiple-access CDMA ; rate matching; maximum free distance MFD ; multiuser detection; interference cancellation; sequential decoding; tailbiting; automatic repeat request ARQ ;

    Sammanfattning : Next generation wireless communication systems will require support for many different applications as well as improved quality compared to existing second generation systems like GSM (Global System for Mobile communications). Since there will be more users and higher data rates, the capacity must also be increased. LÄS MER

  3. 3. Multicarrier Modulation and Coding for Multichannel Systems

    Detta är en avhandling från Chalmers University of Technology

    Författare :Pål Frenger; Chalmers tekniska högskola.; Chalmers University of Technology.; [1997]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikation; Telecommunication; Multicarrier modulation; OFDM; Channel estimation; Decision directed coherent detection; Parallel combinatory signaling; RCPC-codes; rate matching; multichannel systems; multi-code DS-CDMA.;

    Sammanfattning : In this thesis decision directed coherent detectors for single- and multicarrier systems employing an MMSE channel estimation technique is presented. The detectors are designed for Rayleigh fading channels and DQPSK or p/4-DQPSK modulation and exploit knowledge of the fading process correlation. LÄS MER