IEEE transactions on information theory, 2012-02, Vol.58 (2), p.765-779
2012
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Details
- Autor(en) / Beteiligte
- Titel
- MIMO ARQ With Multibit Feedback: Outage Analysis
- Ist Teil von
- IEEE transactions on information theory, 2012-02, Vol.58 (2), p.765-779
- Ort / Verlag
- New York, NY: IEEE
- Erscheinungsjahr
- 2012
- Quelle
- IEEE Xplore
- Beschreibungen/Notizen
- This paper studies the asymptotic outage performance of incremental redundancy automatic-repeat-request (INR-ARQ) transmission over multiple-input multiple-output (MIMO) block-fading channels with discrete input constellations. We first show that transmission with random codes using a discrete signal constellation across all transmit antennas achieves the optimal outage diversity given by the Singleton bound. The optimal SNR-exponent and outage diversity of INR-ARQ transmission over the MIMO block-fading channel are then analysed. We show that a significant gain in outage diversity is obtained by providing more than one bit feedback at each ARQ round. Thus, the outage performance of INR-ARQ transmission can be remarkably improved with minimal additional overhead. A practical feedback-and-power-adaptation rule is proposed for MIMO INR-ARQ, demonstrating the benefits provided by multibit feedback. Although the rule is sub-optimal in terms of outage performance, it achieves the optimal outage diversity.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0018-9448, 1557-9654eISSN: 1557-9654DOI: 10.1109/TIT.2011.2170919Titel-ID: cdi_pascalfrancis_primary_25512724
- Format
- –
- Schlagworte
- Antennas, Applied sciences, Asymptotic properties, Australia, Automatic repeat request, Blocking, Channels, Coding, codes, Constellations, Data transmission, Electronic mail, Exact sciences and technology, Fading channels, Feedback, Information theory, Information, signal and communications theory, Input output, MIMO, MIMO systems, Multi-bit feedback, Multibit feedback, OFDM, Optimization, Outage diversity, Outage probability, Outages, Power allocation, Power allocations, Radiocommunications, Random access memory, Redundancy, Signal and communications theory, SNR- exponent, Systems, networks and services of telecommunications, Telecommunications, Telecommunications and information theory, Transmission and modulation (techniques and equipments), Transmitters