Realtek Semiconductor Inc.

Der-Zheng Liu

Kuang-Yu Yen

John Timothy Coffey

Chung-Yao Chang

Tai-Cheng Liu

Kuo-Ming Wu

Yen-Chih Chen

Tsung-Chun Cheng

Ming-Yuh Yeh

Song-Nien Tung

Hsuan-Jung Su

Kwang-Cheng Chen

Tsung-Hsuan Lee

Jiun-Hung Yu

Hsuan-Yen Chung

Shan-An Yang

Chih-Hsiu Zeng

Song-Nien Tang

Wei-Hsuan Chang

Shu-Hua Yang

Chia-Hsiang Yang

Yu-Nan Lin

Jia-Ching Shen

Chih-Hung Tsai

Fong-Ching Huang

Yung-Ting Chen

Ting-Wei Lai

Yao-Yuan Chang

Yao-Pin Wang

Chi-Chih Wen

Chung-Jung Huang

An iterative detection and decoding (IDD) circuit is provided. The iterative detection and decoding (IDD) circuit is configured to perform M outer iterations on a received signal, and Ninner iterations are performed during the iouter iteration of the M outer iterations, where M is an integer greater than 1, i is an integer less than or equal to M, and Nto Nare integers and include at least two different values.

Iterative detection and decoding circuit, iterative detection and decoding method and MIMO receiver

An encoding method for a wireless local area network includes encoding a packet via a cyclic coding scheme into a first amount of multiple first blocks; processing each of the first amount of the first blocks into a second amount of multiple second blocks; and encoding the second amount of the second blocks via a block coding scheme.

Encoding method, related transmitter apparatus and related receiver apparatus for wireless local area network

A method of determining CCA (clear channel assessment) policy, applied in a communication system including multiple devices, is provided. The method includes the following steps: the devices broadcasting multiple policy indications, in which the devices include a coordinating device, multiple neighboring devices and multiple local client devices, the local client devices associate with the coordinating device to form a network, and the neighboring devices operate within at least one neighboring network; the coordinating device obtaining multiple neighboring policy indications from multiple neighboring frames transmitted by the neighboring devices; and the coordinating device determining whether to change a coordinating policy indication corresponding to the coordinating device according to the neighboring policy indications. A policy indication of a device indicates a policy among multiple CCA policies. The CCA policies include a first policy and a second policy, and the first policy is less sensitive to a sensed signal than the second policy.

Clear channel assessment policy determination method and communication system thereof

A cooperative precoding method, applied in a communication system comprising a coordinating device and multiple serving stations, is provided. The cooperative precoding method includes the following steps: the coordinating device obtaining multiple carrier frequency offset (CFO) parameters of the serving stations with respect to a user device; generating multiple cooperative encoded sequences; assigning the cooperative encoded sequences to the serving stations, respectively, according to an order of the plurality of CFO parameters; and the plurality of serving stations transmitting the cooperative encoded sequences, respectively, to the user device. Each cooperative encoded sequence is transmitted over multiple subcarriers.

Cooperative precoding method and communication system

Disclosed are a wireless transceiver and a wireless communication method capable of reducing signal interference originated from a neighboring channel, in which the difference between the central frequency of the neighboring channel and the central frequency of a target channel is less than a frequency difference threshold and/or the energy of an interference signal of the neighboring channel is greater than a signal energy threshold. The wireless transceiver includes: a radio-frequency transceiver transmitting a first CTS-to-Self packet via the neighboring channel before it transmits a data packet via the target channel, in which the duration defined by the duration field of the first CTS-to-Self packet includes time for the radio-frequency transceiver finishing transmitting the data packet; a frequency synthesizer providing the signal carriers of the neighboring channel and the target channel for the radio-frequency transceiver; and a radio-frequency controller controlling the frequency synthesizer to provide the signal carriers.

Wireless transceiver and wireless communication method

A transmitter operating in a communication system is provided. The transmitter includes an encoding circuit and a modulation circuit. The transmitter is configured to generate multiple encoded bits according to an encoding relationship, in which the encoding relationship is corresponding to a code rate and a minimum distance, and the minimum distance is greater than a reciprocal of the code rate. The modulation circuit is configured to generate a transmission signal according to the encoded bits, such that the encoded bits are transmitted over multiple subcarriers, and each encoded bit is transmitted via a subcarrier. The encoding relationship is corresponding to multiple output codewords, and the minimum distance represents a minimum Hamming distance between two distinct output codewords. One of the output codewords includes the encoded bits.

Transmitter, communication system and transmission method

The present disclosure provides a resource allocation method. The resource allocation method includes the following steps: selecting multiple first selected virtual nodes according to multiple virtual pheromonal trails on multiple virtual edges, in which the first selected virtual nodes forms at least one virtual tour, and the virtual tour includes multiple first virtual edges; updating the virtual pheromonal trails on the virtual edges according to virtual distances corresponding to the first virtual edges of the virtual tour; selecting multiple second selected virtual nodes according to the updated virtual pheromonal trails on the virtual edges, in which the second selected virtual nodes form at least one resulting virtual tour; allocating the resource blocks to selected user pairs according to the resulting virtual tour.

Resource allocation method and full duplex communication system

A user pairing method is provided. The method includes the following steps: selecting a first uplink user device among the uplink set; selecting a first downlink user device among the downlink set; determining whether the first uplink channel gain corresponding to the first uplink user device is greater than a second uplink channel gain corresponding to the first downlink user device, to generate a first determination result; determining whether a first signal to noise plus interference ratio (SINR) perceived at the first downlink user device is greater than a first SINR threshold, to generate a second determination result; forming the first uplink user device and the first downlink user device as a first user pair in a full duplexing (FD) mode when the first determination result and the second first determination result are positive.

User pairing method, wireless station and wireless system

The present disclosure provides a network master device and a network communication method for realizing a cooperative service set, in which the network master device and the network communication method are capable of controlling wireless serving devices to have them keep wireless connections with a wireless terminal device concurrently. An embodiment of the network master device includes a control circuit configured to execute the following steps: receiving uplink packets come from wireless serving devices respectively, and transmitting a transmission packet to an external network according to at least one of the uplink packets, in which a source address of each of the uplink packets is an address of a wireless terminal device; and transmitting at least one downlink packet to at least one of the wireless serving devices, in which a destination address of each the downlink packet is the address of the wireless terminal device.

Network master device and network communication method for realizing cooperative service set

The present disclosure provides a receiver. The receiver comprises an antenna, configured to receive a received signal on a downlink direction, wherein the received signal comprises an interfering downlink signal and a desired downlink signal; and a detecting circuit, coupled to the antenna, configured to perform a multiuser detection operation on the received signal on the downlink direction to generate a detected interfering signal and a detected desired signal; wherein the desired downlink signal is transmitted by a first station, intended for the receiver, and generated according to a first modulation order; wherein the interfering downlink signal is transmitted by a second station, intended for a second receiver other than the receiver, and generated according to a second modulation order.

Receiver, communication system and detecting method

The present invention discloses a wireless communication device including: a transmission circuit generating a digital modulation signal according to transmission data, and analogizing the digital modulation signal to generate and transmit a transmission signal in a first mode; a reception circuit receiving a reception signal including an interference component caused by the transmission circuit; a self-interference cancellation circuit being enabled in the first mode and disabled in a second mode, providing an analog self-interference cancellation signal for the wireless reception circuit according to the transmission signal to cancel a part of the interference component, and providing a digital self-interference cancellation signal for the reception circuit according to the digital modulation signal to cancel another part of the interference component; and a control circuit having the wireless communication device operate in one of the first mode and the second mode according to at least one of indices and parameters.

Wireless communication device and control method

A wireless communication system includes an access point and at least one station, wherein when the access point operates in a setup mode, both the access point and station confirm a specific time slot for transmitting a packet from the station to the access point; and when the access point operates in a data mode following the setup mode, the station directly uses the specific time slot determined in the setup mode to transmit the packet to the access point.

Wireless communication system and associated wireless communication method

A wireless communication system under a contention-based protocol comprises an access point and at least one station, wherein the station is arranged for wirelessly communicating with the access point under the contention-based protocol. In the operations of the wireless communication system, the access point broadcasts a polling usage sequence to assign a time slot for the station, and the station subsequently uses the assigned time slot to transmit a data packet to the access point.

Wireless communication system and associated wireless communication method and wireless device having efficient polling mechanism in overlapping network environments

The present invention discloses a wireless communication method carried out by a wireless transmitter capable of offering an unintended wireless device a chance of starting or proceeding with a transmission procedure during a transmission duration of the wireless transmitter. An embodiment of said wireless communication method comprises the following steps: preparing a packet carrying an indication of a clear channel assessment (CCA) threshold level for an unintended wireless device to decide whether to execute a transmission procedure; and transmitting the packet to an intended wireless device under a protocol by which the unintended wireless device is expected to abide.

Growing community of inventors

Hsinchu County, Taiwan

Der-Zheng Liu