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Title:
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Improving MIMO Sphere Detection Through Antenna Detection Order Scheduling |
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Author:
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Wu, Michael; Dick, Chris; Cavallaro, Joseph R.
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Type:
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Conference Paper |
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Publisher:
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Wireless Innovation Forum |
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Citation:
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M. Wu, C. Dick and J. R. Cavallaro,"Improving MIMO Sphere Detection Through Antenna Detection Order Scheduling," in Software Defined Radio Forum 2011 (SDR-WInnComm), 2011, pp. 280-284. |
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Abstract:
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This paper proposes a novel scalable Multiple-Input Multiple-Output (MIMO) detector that does not require preprocessing to achieve good bit error rate (BER) performance. MIMO processing is a key technology in broadband wireless
technologies such as 3G LTE, WiMAX, and 802.11n. Existing detectors such as Flexsphere use preprocessing before MIMO detection to improve performance. Instead of costly preprocessing, the proposed detector schedules multiple search passes, where each search pass detects the transmit stream with a different permuted detection order. By changing the number of parallel
search passes, we show that this scalable detector can achieve
comparable performance to Flexsphere with reduced resource
requirement, or can eliminate LLR clipping and achieve BER
performance within 0.25 dB of exhaustive search with increased
resource requirement. |
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Date Published:
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2011-12-01 |
