摘要:
The present invention is directed to a method and system for translating a high-level language (HLL) code such as C, C++, Fortran, Java or the like into a HDL code such as Verilog or VHDL which requires no modification in the original HLL source code, while supporting a cross call between software and hardware, and even recursive calls in hardware. The system includes: a HLL-to-HLL source translator which reads user programming directive from a translation-targeted high-level language code marked with the user directive, and separates the translation-targeted high-level language code into a hardware code part and a software code part; a main compiler which compiles the software code part; a HLL-to-HDL translator which includes the front-end and middle-end of the main compiler and a HDL backend; a main core which executes the compiled software code part; and a dedicated hardware which executes the HDL code.
摘要:
This invention relates to a data transmission method in a passive communication system being wirelessly powered up and being passively operable, without using its own power, for data transmission and reception, such as in a passive RFID (Radio Frequency IDentification) communication system, which is capable of effectively configuring a message transmitted by a passive device, thereby providing improved transmission efficiency.
摘要:
The present invention is directed to a method and system for translating a high-level language (HLL) code such as C, C++, Fortran, Java or the like into a HDL code such as Verilog or VHDL which requires no modification in the original HLL source code, while supporting a cross call between software and hardware, and even recursive calls in hardware. The system includes: a HLL-to-HLL source translator which reads user programming directive from a translation-targeted high-level language code marked with the user directive, and separates the translation-targeted high-level language code into a hardware code part and a software code part; a main compiler which compiles the software code part; a HLL-to-HDL translator which includes the front-end and middle-end of the main compiler and a HDL backend; a main core which executes the compiled software code part; and a dedicated hardware which executes the HDL code.
摘要:
A baseband receiver using a transition trigger and a method thereof are disclosed. The baseband receiver is provided in a radio frequency identification (RFID) reader in order to receive a pulse amplitude modulation (PAM) signal, and can improve a bit error rate (BER) performance by mapping transition waveforms generated whenever the received signal is triggered on new symbols, and filtering the new symbols to recover to the original symbols. Since no complex and high performance DC drift estimator is required and DC drifts can stably be removed along with white noise among noise components, it is possible to improve BER.
摘要:
A method of allocating uplink resources in a wireless communication system is provided. The method comprises generating a first message which has a preamble and adaptively further includes resource request information based on a communication state with a base station and transmitting the first message to the base station.
摘要:
The present invention is directed to a method and system for translating a high programming level language code such as C, C++, Fortran, Java or the like into a HDL code such as Verilog or VHDL. The system includes: a C-to-C source translator which reads user API from a translation-targeted high level language code marked with the user API, separates the translation-targeted high level language code into a hardware code part and a software code part, and stores the hardware code part and the software code part in separate files; a main compiler which compiles the stored software code part; a translator which translates the stored hardware code part into a HDL code including one or more block modules and one top module; a main core which executes the compiled software code part; and a dedicated hardware which executes the HDL code.
摘要:
Method for rapidly detecting identifier (ID) of tags, by radio frequency identification (RFID) reader in communication system that includes RFID reader and at least two tags communicating with RFID reader, is provided. RFID reader generates a prefix when IDs contained in at least two messages received collide with each other, prefix including a first colliding bit, which is set to ‘0’ or ‘1’, from high-order bits and non-colliding high-order bits. RFID reader sends a first message containing information that requests transmission of an assigned ID in a preset transmission period when the bits of the generated prefix match bits corresponding to the prefix, in the assigned ID. Tags receive a first message that contains a prefix including at least one bit, and sends a second message containing an assigned ID during a preset transmission period when the bits of the prefix match bits corresponding to the prefix, in assigned ID.
摘要:
When a reader of a Radio Frequency Identification (RF-ID) system sends out a command signal to the RF-ID tag and receives a response signal from the RF-ID tag, an End of Signal (EOS) of the received response signal is detected such that the next command signal can be transmitted within a time. Accordingly, response signal can be detected even under the environment of poor signal to noise ratio performance, and the EOS of the response signal from the RF-ID tag can be recognized with ease and speed.
摘要:
The present invention is directed to a method and system for translating a high programming level language code such as C, C++, Fortran, Java or the like into a HDL code such as Verilog or VHDL. The system includes: a C-to-C source translator which reads user API from a translation-targeted high level language code marked with the user API, separates the translation-targeted high level language code into a hardware code part and a software code part, and stores the hardware code part and the software code part in separate files; a main compiler which compiles the stored software code part; a translator which translates the stored hardware code part into a HDL code including one or more block modules and one top module; a main core which executes the compiled software code part; and a dedicated hardware which executes the HDL code.
摘要:
An apparatus and a method for a random access scheme for multi-channel in a wireless communication system are provided. The method for performing the random access scheme for the multi-channel in the wireless communication system includes randomly generating a backoff counter value to transmit data; adjusting the backoff counter value by taking into account status of a plurality of idle subcarrier sets per backoff slot; when the backoff counter value becomes zero, selecting one or more subcarrier sets to carry the data from the idle subcarrier sets; and transmitting the data through the selected one or more subcarrier sets. The data collision probability between the terminals can be lowered, the channel utility can be enhanced, the transfer rate in the single-channel random access scheme can be raised, and the consumption of the radio resource can be reduced without using signals for the band request and allocation.