摘要:
Disclosed is a hybrid multi-user interference cancellation method for canceling interference between a plurality of user signals, which comprises: receiving a plurality of external user signals, calculating powers of the user signals, and numbering the calculated signal powers in their intensity orders; sorting the user numbers in descending order; forming at least one user cluster so that the signal powers following the sorted user numbers may differ less from a central value or a mean value in the same cluster; and performing parallel interference cancellation on the respective user signals within the same cluster, and performing successive interference cancellation between the formed clusters.
摘要:
Disclosed is an apparatus for preventing a call from being dropped in a mobile communication system, including a Mobile Station (MS) for reporting a temporal reception-impossible mode to a network if the MS enters a temporal reception-impossible state in a state where a call has been connected, and maintaining a Radio Link Timeout (RLT) value during a preset time period; and the network for maintaining the call with the MS during a preset time period after the temporal reception-impossible mode is reported from the MS. According to the apparatus, a call is maintained during a preset time period when an MS is in a temporal reception-impossible state, so that it is possible to prevent a call from being dropped.
摘要:
A data recovery system for a serial digital data link includes a data sampler, compare logic, a phase controller, and a phase shifter. The data sampler samples input data three times in a bit time which time is determined by clock pulses generated by the phase shifter, and recovers digital data according to a predetermined decision criterion. Data sampling phases are split so as to track the data eye. The compare logic compares the output of the data sampler according to a predetermined method. Phase controller uses the output of the compare logic and generates phase control signals. These signals are set so as to control the sampling times of the data sampler and to attain near optimally recovered data stream. The phase shifter uses the phase control signals and makes three different phase clocks from input clock. The input clock can be an external clock, or can be recovered from the external clock or input data stream.
摘要:
An RM code soft decision decoding method using decision by majority comprises: (a) performing multiplication on a bit group of a codeword, and calculating an information bit's estimate group; (b) summating elements of the group and obtaining a final estimate of the degree's information bit to perform decision by majority; (c) using the final estimate to generate a codeword corresponding to each degree's information bit final estimate, and removing the generated codeword from the codeword of (a); (d) repeating the step (c) for the final estimates of the remaining degrees' information bits other than zero-order information bit; and (e) summating elements of codewords of results performed on the final estimates of the first-order information bit in (d) to estimate the zero-order information bit's final estimate.
摘要:
The present invention relates to a gasketed membrane-electrode assembly comprising gaskets arranged on each side of a membrane-electrode assembly including a cathode, an anode, and a polymer electrolyte membrane, in which the gaskets are multilayered films comprising an elastic layer and an adhesive layer formed on each side of a support layer. According to the present invention, the gasket film can be united with the polymer electrolyte membrane, and the leakage of fuel gas and oxidizing gas decreases on operation of a fuel cell. In addition, various materials can be selected for each layer of the gasket. Thus, it can be suitable for mass production of a polymer fuel cell due to its simple manufacturing process.
摘要:
Dislosed is an apparatus and method for erasure detection and soft-decision decoding in a cellular system receiver. In the present invention, a complex channel gain and a noise variance of a received symbol from a cellular system transmitter are estimated, and an erasure symbol (a symbol with high power interference) is detected by comparing a threshold value according to the estimated complex channel gain or noise variance with power of the received symbol. Log-likelihood ratios corresponding to constituent bits of the detected erasure symbols are allowed to be 0, and the log-likelihood ratios of the constituent bits of the other received symbols are calculated. A soft-decision decoding operation of received bits is performed with the calculated log-likelihood ratios.
摘要:
A method of fabricating a flexible emitter using a high molecular compound, including forming an electro-luminescent carbon material on a glass substrate in a predetermined pattern in order to form an emitter pattern thereon, forming an electrode layer of a predetermined height on the emitter pattern and the glass substrate, applying a polymer gel material on the electrode layer, curing the polymer gel material, and separating the flexible emitter from the glass substrate.
摘要:
A method of manufacturing a nano-wire using a crystal structure, A crystal grain having a plurality of crystal faces is used as a seed, and a crystal growing material having a lattice constant difference within a predetermined range is deposited on the crystal grain, thereby allowing the nano-wire to grow from at least one of the crystal faces. Therefore, it is possible to give the positional selectivity with a simple process using a principle of crystal growth and to generate a nano-structure such as a nano-wire, etc. having good crystallinity. Further, it is possible to generate a different-kind junction structure having various shapes by adjusting a feature of a crystal used as a seed.
摘要:
For fabricating a field effect transistor, an extra-doped channel region is formed below a surface of a semiconductor substrate. An opening is formed in the semiconductor substrate into the extra-doped channel region. A gate insulator is formed at walls of the opening such that the extra-doped channel region abuts the gate insulator at a bottom portion of the opening. The opening is filled with a gate electrode. Such an extra-doped channel region prevents undesired body effect in the field effect transistor.
摘要:
Disclosed is a cover replacement assembly for a mobile communication terminal, wherein a replaceable cover is detachably secured to a frame coupled to the terminal. The cover and frame are formed with locking means that snap fit. Locking members formed on the cover engage a locking sill formed on the frame. Also, locking element that is inserted into an aperture in the frame can be manipulated in order to detach the cover from the frame and terminal.