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Training-Based MIMO...
Training-Based MIMO Systems: Part II - Improvements using a Variable Coding Rate Scheme
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- Coldrey, Mikael, 1972 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bohlin, Patrik, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2005
- Engelska.
- Relaterad länk:
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https://research.cha...
Abstract
Ämnesord
Stäng
- In this paper the channel throughput performance is addressed for MIMO systems that employ transmission of known training sequences for channel estimation. In the companion paper, it was found that systems based on superimposed pilots (SIP) suffer from poor channel estimates, since there is interfering data power present during channel estimation. By allowing channel re-estimation, this data can be utilized as additional training power, which significantly improves the channel estimates. As the channel estimates improve, a higher coding rate can successfully be applied. These variable coding rate schemes can also be applied to conventional time-multiplexed pilot schemes. However, our numerical examples show a larger performance increase in channel throughput if applied to a SIP scheme.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- superimposed pilots
- capacity
- decision-directed channel estimation
- training
- variable coding rate
- Wireless communications
- MIMO
- performance bounds
Publikations- och innehållstyp
- rap (ämneskategori)
- vet (ämneskategori)