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.
Small cells continue to increase in popularity among 3G and 4G LTE service providers as a solution to provide coverage in dead zones and to offload traffic from the macro base to service more customers without adding more frequency bands. Issues with wide spread deployment of small cells include interference-degraded links and higher dropped call rates. This paper considers HetNets with a dense deployment...
This writeup examines the construction and performance of non-binary generalized low-density parity-check (GLDPC) codes. Recently, binary GLDPC coding techniques have been shown to improve upon conventional low-density parity-check (LDPC) codes by increasing the minimum codeword length, reducing error floors, and improving performance at lower coding rates. GLDPC codes replace the parity-check constraints...
Link adaptation is one of the key features of modern 3G and 4G communication systems, enabling a significant boost in achievable throughput. Accurate link error prediction (related to channel capacity estimation) is required for implementation of link adaptation. Practical link adaptation algorithms almost universally require extensive simulation effort. On the other hand, research based on information...
TD-SCDMA (Time Division- Synchronous CDMA) systems show performance degradation due to I/Q imbalance resulting from direct-conversion transmitters and receivers. In overall system analysis, it is important to consider both transmitter and receiver I/Q imbalances to account for low cost base stations (BS's) such as femtocells. Two approaches are considered in this paper. The first one is a purely time-domain...
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.