Performance Improvement for Medical Image Transmission Systems using Turbo-Trellis Coded Modulation (TTCM)

Digital images have become an essential working tool in several areas such as the medical field, the satellite and astronomical field, film production, etc. The efficiency of a transmission system to exchange digital images is crucial to allow better and accurate reception. Generally, transmitted images are infected with noise. In the medical field, this noise makes the process of diagnosing difficult. To eliminate the transmission errors, an Error Correcting Code (ECC) can be used with the aim to guarantee excellent reception of the images and allowing a good diagnosis. In this paper, source and channel encoding/ decoding functions are studied during medical image transmission (LUNG). At first, the Turbo-Code (TC) is used as ECC and subsequently the Turbo-Trellis Coded Modulation (TTCM). The simulation results represent the curves giving the Bit Error Rate (BER) as a function of the signal to noise ratio (Eb/N0). In order to compare these two systems properly, the MSSIM (Mean Structural Similarity) parameter was used. The obtained results showed the effect and importance of ECC on the transmission of medical images using TTCM which gave better results compared to TC with regard to increasing the performance of the transmission system by eliminating transmission noise.

Communication Link Model Using Trellis Coded Modulation for 5G Communication in the Tropical Regions

Signal fading is a major problem in the tropical regions. Here the signals get highly attenuated for torrential rain, hence the signal power diminishes and the bit error rate (BER) increases. To enhance the signal to noise ratio (SNR) or to minimize the BER a communication link model using trellis coded modulation (TCM) for 5G communication has been proposed in this paper for the tropical regions. Various diversity techniques have been applied to minimize BER in the tropical regions. STBC (Space-Time Block Coding) MIMO technique is a spatial diversity technique which has been used in the proposed model in this paper. Bit error rate values are obtained for MIMO multi path fading distributions viz. Rayleigh fading distribution and Rician fading distribution. BER values are also attained in respect of different MIMO techniques (2x2, 3x3 and 4x4). The 4x4 STBC MIMO System has been generated using hardware co-simulation block and the results are implemented in Xilinx kintex-7 FPGA board. From the analysis of the result it is observed that Rayleigh fading distribution reflects better performance than that of Rician fading distribution. 4x4 MIMO Technique renders better result in comparison with that of lower MIMO techniques.

Communication Link Model using Trellis Coded Modulation for 5G Communication in The Tropical Regions

Signal fading is a major problem in the tropical regions. Here the signals get highly attenuated for torrential rain, hence the signal power diminishes and the bit error rate (BER) increases. To enhance the signal to noise ratio (SNR) or to minimize the BER a communication link model using trellis coded modulation (TCM) for 5G communication has been proposed in this paper for the tropical regions. Various diversity techniques have been applied to minimize BER in the tropical regions. STBC (Space-Time Block Coding) MIMO technique is a spatial diversity technique which has been used in the proposed model in this paper. Bit error rate values are obtained for MIMO multi path fading distributions viz. Rayleigh fading distribution and Rician fading distribution. BER values are also attained in respect of different MIMO techniques (2x2, 3x3 and 4x4). The 4x4 STBC MIMO System has been generated using hardware co-simulation block and the results are implemented in Xilinx kintex-7 FPGA board. From the analysis of the result it is observed that Rayleigh fading distribution reflects better performance than that of Rician fading distribution. 4x4 MIMO Technique renders better result in comparison with that of lower MIMO techniques.