Enhancement of Fully Parallel Turbo Decoder Using Different Algorithms for Communication Applications

Abstract

ABSTRACT newlineThe term of VLSI denotes the Very Large Seale Integration, it is the combination of billions of transistor into the single chip. The error correction codes are developed in mobile communication standards like Third Generation Partnership Project (3GPP) and Fourth Generation Partnership Project (4GPP) long term evolution. The latest standardization method of turbo decoder can perform the complex operation; it is not easy to perform. In turbo decoder have the performance to improve like throughput, area, power consumption and efficiency. The advanced method of turbo decoder has the serial and parallel turbo decoder. The parallel turbo decoder is used to enhance the throughput of the entire system. The multiple soft in soft out turbo decoders are segregated into several blocks in order to perform the process in parallel. In previous they used several kind of Long Term Evolution (LTE) turbo decoders, which is more complex and it is not applicable for mobile communication, instead of using the parallel turbo decoders are used to show the better performance of the system. The delay, phase switching latency, and bottle neck, problems are resolved. The high coding rate can be achieved through the error correction codes, while using the developed algorithms like tail overlapped algorithm, floating point and fixed point algorithm for the application of mobile communication. The phase switching latency is appeared in the tail overlapped algorithm and it is beaten through the floating point and it yields the high computational complexity and it is overcome through the fixed point turbo decoder algorithm, finally it is applied for the mobile communication application. Thus the performances are improved through the algorithm and the complexity is reduced. The performances are finally compared with the existing and shows the better performance for suitable application.In today s era of communication all are keen in using mobile phones. Here I am purposing a parallel operating turbo decoder. Methodologies that I gone th