Efficient Data Transmission Protocol using Post-Computation Selection Combining Scheme for reliable, low-latency Wireless Network

In this letter, efficient data transmission protocol is proposed using the basic concept of Aggressive Packet Combining (APC) scheme along with Post-Computation Selection Combining (PCSC) for reliable, low-latency data transmission in wireless network. Logical computation is done at transmitter and receiver side and selection combining is only performed at the receiver side by considering three branch diversity systems. An efficient error correction protocol proposed by Leung called APC is devised for low latency and high reliability at the receiver side in high error rate wireless channel. However, APC has many drawbacks and two of the major drawbacks are that of the low throughput and unable to correct errors occurring in the same bit locations of two or more received copies (called Triple error) of the data packet. Extensive researches have been done on to overcome these two major drawbacks of APC and many of them succeed to achieve their target. Therefore, we propose an efficient data transmission technique which combines the basic principle of APC along with Post-Computation Selection Combining (PCSC) technique to deal with the issues stated above.With the advancement in the technology, the ultra-low latency technique is the need of the hour for many real time applications. By slightly increasing the transmitter and receiver complexity, we can achieve low latency network and reliable data in the current proposed technique. And APC with PCSC combined technique has succeeded to overcome the above stated disadvantages of APC. Convincing improvement in performance in terms of reduced packet error probability and increased throughput can be achieved by this proposed technique.