Abstract:
A method of a transmitter transmitting a packet encoded by applying a coding scheme based on a wireless channel environment to a receiver, and a method of the receiver detecting the coding scheme applied to the encoded packet and decoding the packet, in which the transmitter applies a spreading factor corresponding to the coding scheme to a preamble of the packet, and the receiver decodes the packet by detecting the coding scheme using the preamble.
Abstract:
Disclosed is a display device including a power transformer converting an input voltage into a specified voltage, a display driver including a rectifier rectifying a voltage converted through the power transformer and a converter converting a voltage rectified through the rectifier based on a control signal for outputting an image, and a display panel receiving a converted voltage through the display driver to display the image. The display driver may include a voltage drop unit dropping a voltage input through the rectifier. Other various embodiments as understood from the specification are also possible.
Abstract:
A includes a cathode active material including a lithium transition metal oxide, wherein the lithium transition metal oxide includes nickel and a non-nickel transition metal, and an amount of the nickel in the lithium transition metal oxide is about 50 mole percent or greater with respect to a total number of moles of transition metals in the lithium transition metal oxide, a conducting agent including a linear carbonaceous conducting agent, and a binder, wherein the binder includes a first fluorinated binder not including a polar functional group, a second fluorinated binder including a polar functional group, a first non-fluorinated binder including a cyano group, and a second non-fluorinated binder including a cyanoalkyl group.
Abstract:
A method and an apparatus for controlling an interleaving depth are provided. The interleaving depth controlling method includes performing a modulo operation on an interleaving depth selected to be less than or equal to a maximum interleaving depth and a total number of codewords to obtain a number of remaining codewords; and comparing the total number of the codewords to the interleaving depth, when the number of the remaining codewords excludes “0”, to control the interleaving depth.
Abstract:
A method and apparatus for a collision-free carrier sense multiple access (CSMA) are provided. The method of a node associated with a beacon enabled carrier sense multiple access (CSMA)-based wireless communication network through an access point (AP) includes receiving a beacon from the AP, the beacon comprising a back-off prime number and a beacon random number, and generating a back-off interval based on the beacon random number, the back-off prime number, a mapped identification (ID) of the node, and a current time slot of a frame of the beacon. The method and apparatus provide a collision-free CSMA scheme for a beacon enabled CSMA-based wireless communication network. In the collision-free CSMA scheme, uniformly distributed back-off intervals may be generated in a distributed fashion at each node for a CSMA-based wireless communication network. The back-off intervals may be correlated among the nodes even though the nodes do not communicate with each other.
Abstract:
A method of performing synchronization in a super regenerative receiver (SRR) includes setting a quench rate of the SRR to a value of 1.5 times a chip rate of an incoming signal, acquiring an expected preamble sequence of an arbitrary sample set among a plurality of possible sample sets, acquiring an expected start frame delimiter (SFD) sequence for all of the possible sample sets to achieve frame synchronization, computing respective correlation metrics for bits of the expected SFD sequence while the expected SFD sequence is acquired for all of the possible sample sets, calculating a decision metric based on the correlation metrics in response to an SFD sequence being detected for one or more of the possible sample sets, and identifying a best sample set for demodulating the incoming signal among all of the possible sample sets based on the decision metric to achieve pulse synchronization.
Abstract:
In one aspect of the present invention, a method for managing communications in a sensor network will be described. A coordinator device receives charging interval data from an energy harvesting sensor device. A sleeping interval for the sensor device is determined. A beacon frame is transmitted from the coordinator device to one more sensor devices in a network. The timing of the transmission is based at least in part on the sleeping interval data. The beacon frame may contain requests, commands or other data designated specifically for the sensor device. Various other aspects of the invention relate to the sensor device, the coordinator device and/or their operations.
Abstract:
Wireless communication in a wireless system using a multiple user transmission opportunity is provided. Data blocks at a wireless station are transmitted to multiple wireless receivers over a shared wireless communication medium. The data blocks are organized in order of transmission priority based on access categories. Contention for access to the communication medium during a transmission opportunity period is based on a backoff timer of each access category and the transmission priority. Upon successful contention for a transmission opportunity period, during the transmission opportunity period, a data block of a primary access category is wirelessly transmitted from the wireless station to one or more primary destination wireless receivers. Simultaneously, a data block of a secondary access category is wirelessly transmitted from the wireless station to one or more secondary destination wireless receivers.
Abstract:
According to an embodiment, an electronic device may comprise at least one communication processor. The at least one communication processor may be configured to: establish, based on dual connectivity, a first connection based on a first radio access technology (RAT) and a second connection based on a second RAT; transmit first uplink data based on the first connection and transmit second uplink data based on the second connection, wherein a throughput corresponding to the second connection may be a first value; identify at least one first parameter associated with the first connection and at least one second parameter associated with the second connection; perform at least one operation for transmitting, based on the second connection, uplink (UL) data with a throughput less than the first value, based on the at least one first parameter satisfying a first condition indicating a good uplink channel state and that the at least one second parameter satisfying a second condition indicating a poor uplink channel state; and based on performing the at least one operation, transmit third uplink data based on the first connection and transmit fourth uplink data based on the second connection, wherein a throughput corresponding to the second connection may be less than the first value.
Abstract:
A method of a transmitter transmitting a packet encoded by applying a coding scheme based on a wireless channel environment to a receiver, and a method of the receiver detecting the coding scheme applied to the encoded packet and decoding the packet, in which the transmitter applies a spreading factor corresponding to the coding scheme to a preamble of the packet, and the receiver decodes the packet by detecting the coding scheme using the preamble.