ALOHA Random Access that Operates as a Rateless Code
نویسندگان
چکیده
منابع مشابه
Random access protocols based on rateless codes
We present two coded random access protocols that rely on the ideas of rateless codes and Successive Interference Cancellation (SIC). The rateless aspect is seen in that the contention period continues until the Base Station (BS) decides that a sufficient fraction of users has been resolved. The first protocol is referred to as frameless ALOHA, in which a device transmits the packet multiple ti...
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The effective bandwidth of a source measures the amount of burstiness besides the data generation rate. The effective bandwidths provide a means to guarantee qualityof-service in terms of packet loss probabilities. The classical theory of effective bandwidth, however, does not apply to a random access system, since the queues are coupled, i.e., the service statistics at one queue depend on the ...
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Over the past decade, rateless codes, i.e., digital fountain codes, have emerged as an efficient and robust solution for reliable data transmission over packet erasure networks and a particularly suitable one for multicasting and broadcasting applications where users may experience variable channel conditions and packet loss rates, such as mobile environments. Luby Transform (LT) and Raptor cod...
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The throughput and delay characteristics of a landmobile satellite channel are analyzed for both slotted ALOHA and slotted direct-sequence CDMA (code division multiple access), using binary phase shift keying (BPSK) modulation and forward error correction coding (FEC). In the case of CDMA, the application of path diversity techniques-maximal ratio combining and selection diversity-is also taken...
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Near-Capacity Fixed-Rate and Rateless Channel Code Constructions
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ژورنال
عنوان ژورنال: IEEE Transactions on Communications
سال: 2013
ISSN: 0090-6778
DOI: 10.1109/tcomm.2013.100913.130232