Shu (Marloon) Wang

Someday your favorite and important USB flash drive will suddenly don't do its job. When you try to access your files in it, it may take hours to complete anything. When you try to format it, a pop-up message window will tell you "device media write protected" or "unable to complete format". Before you throw it into trash can, here are something you may try. Windows, Right Click, Format, Both normal/quick format. HDD LLF Low Level Format Tool HP USB Disk Storage Format Tool Active@KillDisk Someone said it may work after put it in a freezer for a while. Who knows. If it is a flash card, you may try to format it using a digital camera or mobile phone. Anyway, if you succeed in repairing your USB flash drive, it may be a good idea for you not to use it for storing any critical files in the future.

One advanced feature of 3GPP LTE-Advanced is carrier aggregation. It is an essential mechanism for LTE Release 10/11 to meet the peak-data rate, 1Gbps, requirement of IMT-Advanced of ITU-R. Beside this, it also helps LTE maintain backward compatibility, support symmetric/asymmetric operation modes and contiguous/non-contiguous aggregations. All these features help enable a variety of network deployment scenarios, such as hot-spot operations and flexible duplex. Historically carrier aggregation is not something brand-new in standards.  On 3GPP2 side, the IS-2000 standard supports a multi-carrier operation, Spreading Rate 3 or 3x. Spreading 3 is used when higher data rates are desired with more bandwidth available. Spreading 3 of multi-carrier operation can make IS-2000 not only is backward compatible with its IS-95 predecessor but also satisfies the requirements set forth by IMT-2000/3G at that time. With adding additional guard band, IS-2000 can be harmonization-ready with UMTS. Sinc