发明名称 |
ASYNCHRONOUS DS-CDMA RECEIVER |
摘要 |
<p>Methods, apparatus, and systems are provided for collecting data from a plurality of downhole sensors located in a wellbore utilizing an asynchronous direct-sequence code division multiple access (DS-CDMA)-based communication scheme. One example method includes receiving a superposed signal comprising asynchronous signals from the downhole sensors, wherein a spreading sequence has been applied to data generated by each of the downhole sensors to form each of the asynchronous signals; sampling the received superposed signal; and processing the sampled superposed signal using decorrelation to determine the data from at least one of the downhole sensors before the spreading sequence was applied.</p> |
申请公布号 |
CA2817558(A1) |
申请公布日期 |
2013.12.04 |
申请号 |
CA20132817558 |
申请日期 |
2013.06.04 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
TROITE, TORGEIR ANDERSSEN;LEHNER, DEAN TAYLOR;LUNDLI, STIAN;JAHN, MICHAEL WALTER |
分类号 |
E21B47/12;H04B1/707;H04J13/00 |
主分类号 |
E21B47/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|