Apparatus and method for coding packet
AssigneeKorea Aerospace Research Institute
InventorsHong Won Park, Seok Ho Chang, Mee Sue Shin
Life of this patent
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Abstract
An apparatus for coding a plurality of packets in a multi-antenna system, the apparatus including a processor configured to determine space-time codes of the plurality of packets sequentially from a subsequent packet to maximize an average throughput of the plurality of packets, and a transmitter configured to transmit the plurality of packets to an antenna, is provided.
Claims8
An apparatus for coding a plurality of packets in a multi-antenna system associated with a hierarchical multimedia source, the apparatus comprising:
- a processor
- configured to determine space-time codes of the plurality of packets associated with the hierarchical multimedia source, using an average throughput (ATP) expressed according to the following Equation:
- ATP=R1(1−P1)P2+(R1+R2)(1−P1)(1−P2)P3+(R1+R2+R3)(1−P1)(1−P2)(1−P3)P4+ . . . +(R1+R2+R3+ . . . +Rn−1)(1−P1)(1−P2)(1−P3) . . . (1−Pn−1)Pn+(R1+R2+R3+ . . . +Rn−1+Rn)(1−P1)(1−P2)(1−P3) . . . (1−Pn−1)(1−Pn)
- wherein R1, R2 . . . Rn−1 and Rn denote a data transmission rate of each packet or size of packet to be transmitted;
- P1, P2 . . . Pn−1 and Pn denote a packet error rate of each packet to be transmitted;
- ‘n’ denotes the number of packets to be transmitted,
- wherein, the processor is to verify whether the average throughput of the plurality of packets is maximized when the space-time codes of the packets are determined;
- and
- a transmitter configured to transmit the plurality of coded packets to an antenna.
A method of coding a plurality of packets in a multi-antenna system associated with a hierarchical multimedia source, the method comprising:
- determining space-time codes of the plurality of packets associated with the hierarchical multimedia source, using an average throughput (ATP) expressed according to the following Equation:
- ATP=R1(1−P1)P2+(R1+R2)(1−P1)(1−P2)P3+(R1+R2+R3)(1−P1)(1−P2)(1−P3)P4+ . . . +(R1+R2+R3+ . . . +Rn−1)(1−P1)(1−P2)(1−P3) . . . (1−Pn−1)Pn+(R1+R2+R3+ . . . +Rn−1+Rn)(1−P1)(1−P2)(1−P3) . . . (1−Pn−1)(1−Pn)
- wherein R1, R2 . . . Rn−1 and Rn denote a data transmission rate of each packet or size of packet to be transmitted;
- P1, P2 . . . Pn−1 and Pn denote a packet error rate of each packet to be transmitted;
- ‘n’ denotes the number of packets to be transmitted,
- verifying whether the average throughput of the plurality of packets is maximized when the space-time codes of the packets are determined;
- and
- transmitting the plurality of coded packets to an antenna.
A non-transitory computer-readable medium comprising a program for instructing a computer to perform a method of coding a plurality of packets in a multi-antenna system associated with a hierarchical multimedia source, the method comprising:
- determining space-time codes of the plurality of packets associated with the hierarchical multimedia source, using an average throughput (ATP) expressed according to the following Equation:
- ATP=R1(1−P1)P2+(R1+R2)(1−P1)(1−P2)P3+(R1+R2+R3)(1−P1)(1−P2)(1−P3)P4+ . . . +(R1+R2+R3+ . . . +Rn−1)(1−P1)(1−P2)(1−P3) . . . (1−Pn−1)Pn+(R1+R2+R3+ . . . +Rn−1+Rn)(1−P1)(1−P2)(1−P3) . . . (1−Pn−1)(1−Pn)
- wherein R1, R2 . . . Rn−1 and Rn denote a data transmission rate of each packet or size of packet to be transmitted;
- P1, P2 . . . Pn−1 and Pn denote a packet error rate of each packet to be transmitted;
- ‘n’ denotes the number of packets to be transmitted,
- verifying whether the average throughput of the plurality of packets is maximized when the space-time codes of the packets are determined;
- and
- transmitting the plurality of coded packets to an antenna.
Dependencies are inferred from the claim text.