摘要
石油测井是石油勘探过程中的必要环节。测井过程中,由于测井数据的多样性,峰值数据量极大,容易造成码间干扰及载波间干扰,对数据接收造成了极大影响。基于以上背景,文中提出了一种基于OFDM技术的自适应比特和功率分配的实际编码方法,在降低算法复杂度的同时又能够很好地减小发射功率。通过系统仿真及实际的硬件实践测试,该实现方案在实际测井过程中可以合理分配每道子载波的传输比特数,有效提高传输速率。
Petroleum logging is the necessarily step in petroleum exploitation.Serious signal distortion and attenuation are generated in the logging process due to the long logging cable, and the long duration of the channel impulse response makes the inter-symbol interference and inter-carrier interference salient, which cause a great impact on the data receiving. This paper presents a practical algorithm based on OFDM technology which can be adaptive bit and power allocation, and combines the advantages of the classic Hughers-Hartogs algorithm and Chow algorithm. Moreover, this algorithm reduces the complexity of the algorithm and transmission power. During System Simulation and hardware realization, the actual implementation in the logging process can reasonably allocate transmission bits of sub-carriers channel and increase the transmission rate.
作者
陈鹏
张英争
CHEN Peng et al(Henan Institute of Technology, Xinxiang 453003, Chin)
出处
《河南机电高等专科学校学报》
CAS
2016年第5期7-11,共5页
Journal of Henan Mechanical and Electrical Engineering College
