| Patent application number | Description | Published |
|---|
| 20090028253 | Tone-Interleaved Coded Modulation Scheme for MIMO OFDM Communication - A MIMO OFDM system for TICM is provided. The tone-level interleaver at the transmitter uses a block of N | 01-29-2009 |
| 20090110044 | Method and Apparatus for Deciding a Channel Impulse Response - Method and apparatus for deciding a channel impulse response for an OFDM system are provided. First, a channel frequency response is generated by using a plurality of pilot tones of a signal. A channel impulse response is generated by applying the IFFT to the channel frequency response. A plurality of selected channel taps are derived by comparing a plurality of channel taps related to the channel impulse response with a reference threshold. Finally, the channel impulse response is generated by calculating channel impulse respose according to the selected channel taps. This method calculates the channel impulse response in time domain and frequency domain so that the calculation complexity can be reduced, and the system efficiency can be enhanced. | 04-30-2009 |
| 20090110090 | Wireless Communication Receiving System and Apparatus and Method for Deciding a Transmitted Signal Corresponding to a Received Signal Thereof - A wireless communication receiving system and an apparatus and a method for deciding a transmitted signal corresponding to a received signal thereof are provided. The transmitted signal comprises a plurality of sub-transmitted signals. The system selects at least one of the sub-transmitted signals as a reference signal group, wherein each of a plurality of candidate values of the reference signal group forms a candidate geometric space respectively. The received signal is projected to each of the candidate geometric spaces to generate a projection signal respectively. In each of the candidate geometric space, the corresponding projection signal is quantized to generate a quantized projection signal having a projection distance to the corresponding projection signal. Finally, the transmitted signal is decided according the quantized projection signal and the candidate signal value corresponding to the shortest projection distance. | 04-30-2009 |
| 20090110113 | Wireless Communication Systems, Apparatus and Method for Encoding and Decoding a Plurality of Information Bits - Wireless transmitted system and apparatus and method for encoding a plurality of information bits to a plurality of transmitted signals thereof, and wireless received system and apparatus and method for decoding a received signal to a plurality of information bits thereof are provided. The wireless transmitted system encodes a plurality of information bits to a plurality of transmitted signals by two logic operation modules, an interleaving module, and a combination module. The wireless received system decodes a received signal to a plurality of information bits by a division module, two probability generation modules, two status calculation modules, a signal generation module and a combination module. | 04-30-2009 |
| 20090175392 | System, Apparatus, and Method for Cancelling Interferences of Received Signals - An apparatus and a method for cancelling an interference of each of a plurality of received signals are provided. The apparatus comprises an estimation module, an ordering module, a selection module, an equalizer, and a cancellation module. The estimation module estimates a plurality of estimated channels according to a first predetermined number of pilot-tones. The ordering module decides a decision order for processing. The selection module selects a second predetermined number of the received signals as the second predetermined number of processing signals. The equalizer estimates the estimated values, wherein each of the estimated values corresponds to a processing signal. The decision module decides a decided value for each of the estimated values. The cancellation module cancels the interference for each of the processing signals according to the corresponding decided value and the corresponding channel. Then, the estimation module further estimates the estimated channels according to the pilot-tones and a plurality of estimated values. | 07-09-2009 |
| 20100008431 | APPARATUS AND METHOD FOR CHANNEL STATE INFORMATION FEEDBACK - A method for a mobile station to provide to a base station feedback of channel state information (CSI) regarding a plurality of communication channels between the mobile station and the base station. The method includes: estimating the CSI by calculating a plurality of channel responses each for one of the communication channels; compressing the estimated CSI; and sending the compressed CSI as the feedback to the base station. | 01-14-2010 |
