کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
448400 693566 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficient OFDM-based WLAN-multicast with feedback aggregation, power control and rate adaptation
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Efficient OFDM-based WLAN-multicast with feedback aggregation, power control and rate adaptation
چکیده انگلیسی

Feedback aggregation is an approach for repeat request protocols in which positive and negative feedback from multiple wireless stations is aggregated within a single time slot, during which negative acknowledgments (NACKs) from non-leader receivers may cancel positive acknowledgments (ACK) sent by the leader. This solves the problem of increased overhead with increasing number of receivers, and enables high rate audiovisual mediacast for large wireless multicast receiver groups. In this paper, we investigate feedback cancelation (jamming) failure rates, which in turn determine the performance of error correction protocols using feedback aggregation. We do so by simulation and measurement using a variable number of NACKs in i.i.d. fading scenarios. Our results apply to OFDM based wireless multicast and we show that multicast error performance and throughput can be tuned with ACK power control using consumer IEEE 802.11 hardware.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Communications - Volume 35, Issue 18, 1 November 2012, Pages 2245–2253
نویسندگان
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