scholarly journals Accumulator Aided Decoding of Low Complexity SISO Arithmetic Codes with Image Transmission Application

2013 ◽  
Vol 79 (7) ◽  
pp. 23-30
Author(s):  
Saikat Majumder ◽  
Shrish Verma
2014 ◽  
Vol 989-994 ◽  
pp. 4759-4762
Author(s):  
Zhong Sheng Wang ◽  
Dong Li Huang

ZigBee technology is mainly used in short distance, low power consumption, low rate, low complexity of equipments for data transmission. When image has a large amount of data, it should be processed firstly, and then transmitted. This essay makes a research on healthy care system, using CMOS camera to get image and compress image. Then, the compressed image is transferred to ARM processor, and divided into data packets according to the requirement of the ZigBee network transmission. Finally, the image is transferred to control center and displayed. After the final test, this system can get images to meet the requirements, which has some practical values.


Author(s):  
Zainab Noori Ghanim ◽  
Buthaina M. Omran

High peak to average power ration (PAPR) in orthogonal frequency division multiplexing (OFDM) is an important problem, which increase the cost and complexity of high power amplifiers. One of the techniques used to reduce the PAPR in OFDM system is the tone reservation method (TR). In our work we propose a modified tone reservation method to decrease the PAPR with low complexity compared with the conventional TR method by process the high and low amplitudes at the same time. An image of size 128×128 is used as a source of data that transmitted using OFDM system. The proposed method decrease the PAPR by 2dB compared with conventional method with keeping the performance unchanged. The performance of the proposed method is tested with several numbers of subcarriers; we found that the PAPR is reduced as the number of subcarriers decreased.


2013 ◽  
Vol 3 (6) ◽  
pp. 512-515
Author(s):  
Tao Ma ◽  
Zhanqi Xu ◽  
Xiaoyong Wei ◽  
Fan Yang ◽  
Ding Zhe

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