Abstract:
브로드캐스팅환경에서파운틴부호차수분포최적화방법이개시된다. 송신장치는복수의수신장치각각에대한오버헤드확률분포정보를산출하고, 복수의수신장치각각으로부터수신한파운틴부호차수분포최적화를위한정보및 오버헤드확률분포정보에기초하여파운틴부호차수분포를생성한다. 따라서, 복수의중간상태사용자가추가적으로복원하게되는메시지패킷의개수를최대화할수 있고, 이를통해데이터전송효율을향상시킬수 있다.
Abstract:
A block copolymer is provided. According to an embodiment of the present invention, the block copolymer comprises a first block represented by the following formula 1 and a second block represented by the following formula 2. COM1 and COM2 are independently selected from a group including polystyrene, polymethylmethacrylate, polyethylene oxide, polyvinyl pyridine, polydimethylsiloxane, polyferrocenyldimethylsilane and polyisoprene, R1 is hydrogen or an alkyl group having 1 to 10 carbon atoms, x is 10 to 500, a is 1 to 50, R2 is hydrogen or an alkyl group having 1 to 10 carbon atoms, y is 10 to 500, and b is 1 to 50.
Abstract:
Disclosed are a method for generating a matrix by using Luby-Transform (LT) code, and encoding/decoding apparatuses for the same. The encoding apparatus includes a maximum encoding matrix generator for generating a maximum encoding matrix including a plurality of sub-matrixes in order to LT-encode data having variable-length information; a dense matrix generator for generating a dense matrix; an LT encoding matrix generator for generating an LT encoding matrix by extracting only portions of information from the maximum encoding matrix and the dense matrix and combining the portions; and an encoding unit for generating an encoding packet by encoding the data having the variable-length information by using the LT encoding matrix. According to the embodiment, LT encoding for data having the variable-length information is applied to an application layer, so that error correction is applied.
Abstract:
The present invention relates to a device and a method for determining the number of nodes per an optimal unit area maximizing a throughput of a whole network in a multi-hop relay. The present invention includes a measurement unit measuring a parameter of a network for transmitting the multi-hop relay in a relay based communication system and a calculation unit calculating the number of the nodes per the unit area based on the parameter of the measured network. [Reference numerals] (100) Device for calculating the number of nodes per an optimal unit area; (110) Measurement unit; (120) Calculation unit; (130) Control unit