The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper applies a frequency offset transmitter diversity method for Machine-to-Machine (M2M) communication systems. Wireless terminals based on ZigBee and Wi-SUN offer long term usage and low cost. Frequency offset transmitter diversity is useful for these M2M applications because all it needs are additional access point antennas and an error correction function. Conventionally, the error correction...
This paper proposes two residual interference reduction schemes for the successive interference canceller (SIC) in M2M wireless access systems. In general, it's difficult for SIC to completely eliminate interference due to channel estimation errors. Such errors are a serious problem if there are many terminals and the environment is multi-path. The first scheme, the Pre-FDE scheme, employs frequency...
This paper describes a wireless baseband large‐scale integration (LSI) that contains a sleep management circuit. The sleep manager performs the sleep‐clock offset compensation and enables a wireless terminal (WT) with a typical crystal oscillator (XO) to remain in sleep mode for a long period while maintaining synchronization with the access point. Lab experiments show that the sleep period reaches...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.