Industrial Technology Research Institute

Sunplus Technology Co., Ltd.

Realtek Semiconductor Inc.

Sunplus Mmobile Inc.

Shin-Lin Shieh

Po-Ning Chen

Yung-Hsiang Han

Shin-Yuan Wang

Yu-Chih Huang

Chia-Hung Lin

Chun-Ming Kuo

Wern-Ho Sheen

Shuenn-Gi Lee

Hui-Ming Wang

Xiu-Sheng Li

Shyh-Tzong Kuo

Szu-Chun Wang

Yunghsiang S Han

A transmitting method of a transmitter for a non-orthogonal multiple access communication system, including: storing rules for calculating transmission rate combinations for simultaneously transmitting a first and a second application data; receiving a transmission grant for transmitting the first application data from a receiver; determining whether to transmit the second application data simultaneously; if yes, calculating multiple transmission rate combinations for simultaneously transmitting the first and the second application data based on the rules to calculate a transmission rate combination table, or generating the transmission rate combination table according to a pre-stored transmission rate combination table; selecting a transmission rate combination from the transmission rate combinations in the transmission rate combination table based on a transmission rate requirement of the second application data; and transmitting the first and the second application data simultaneously based on the selected transmission rate combination.

Method and transmitter for non-orthogonal multiple access communication system

This invention discloses a memory control module and its associated control method. The memory control module includes a storage unit, an ECC unit, and a read/write control unit. The storage unit is to store a target data. The ECC unit includes multiple first encoders and a second encoder. The first encoders perform an encoding operation on the target data and generate multiple first sets of parity check bits, which comprise at least two lengths. The second encoder performs an encoding operation on the target data and the multiple first sets of parity check bits and generates a second set of parity check bits. The read/write control module converts the target data, the first sets of party check bit sets and the second set of parity check bits into a data format of a memory module.

Memory control module and control method

The disclosure is directed to a method of multiuser superposition transmission (MUST) method and a transmitter using the same method. In one of the exemplary embodiments, the disclosure is directed to a method of multiuser superposition transmission (MUST) method used by a base station. The method would include not limited to: determining a first bit stream to be transmitted; encoding the first bit stream to generate an encoded first bit stream which has a plurality of binary levels per symbol; determining a first encoding rate for each of the binary levels of the encoded first bit stream, wherein at least two of the levels of the encoded first bit stream have a different code rate; and attaching a first plurality of redundancy bits based on the first encoding rate.

Method of multiuser superposition transmission and transmitter using the same

The present disclosure is directed to a method of radio coverage extension and a base station using the same method. According to one of the exemplary embodiments, the base station transmits system information in a radio frame through a broadcast channel and selects a payload structure of repetitive system information from a plurality of predefined payload structures that includes the first payload structure and a second payload structure. The size of first payload structure is greater than the size of second payload structure. The base station transmits within the same radio frame a plurality of the repetitive system information having the payload structure through the broadcast channel in response to transmitting the system information. If the first payload structure mode is selected, there are N1 repetitive system information. If the second payload structure is selected, there are N2 repetitive system information where N2 is smaller than or equal to N1.

Method of radio coverage extension and base station using the same

A device, method and system for communicating data are disclosed. The method for communicating data is adapted for a base station, and the method includes grouping a data for transmission in a plurality of data subsets, in which the data for transmission includes a plurality of information bits, encoding the data subsets; modulating the data subsets, and transmitting the data subsets to a receiving device. A base station includes a communication protocol module grouping a data for transmission in a plurality of data subsets, in which the data for transmission comprises a plurality of information bits, encoding the data subsets, modulating the data subsets, and transmitting the data subsets to a receiving device.

Device, method and system for communicating data

A method for mitigating interference is provided. First, a received signal having a training sequence is received from a transmitter. Then, a Signal-to-Interference-plus-Noise Ratio (SINR) of the training sequence in the received signal is calculated, and whether a co-channel interference signal exists in the received signal is determined according to the SINR. The signal power corresponding to each time index in the received signal is calculated to detect a beginning time point and an ending time point of the co-channel interference signal. Finally, when the co-channel interference signal in the received signal is detected, the time when an interference cancellation filter is turned on is determined by the beginning time point and the ending time point.

Method for mitigating interference

A decoding method and system for real-time wireless channel estimation, which decodes a received signal with a noise. The received signal is coded by a concatenation code. At first, the received signal is performed a certain amount of decoding by a Max-Log-MAP decoding procedure. Next, an estimated amplitude of the received signal and an estimated variance of a noise are computed. Then, the received signal is adjusted in accordance with the estimated amplitude and the estimated variance to thereby produce an adjusted received signal. Finally, the adjusted received signal is decoded by a Log-Map decoding procedure.

Decoding method and system for real-time wireless channel estimation

A sequential decoding method and a decoding apparatus are provided. According to the method, an open stack is adopted for storing a plurality of paths. When the codeword generated by an internal decoder in the decoding apparatus is incorrect, a codeword is generated again by using the paths stored in the open stack. Accordingly, the complexity of decoding is reduced.

Sequential decoding method and apparatus thereof

A method for near maximum-likelihood sequential decoding is provided. According to the method, paths unlikely to become the maximum-likely path are deleted during decoding through a level threshold to reduce decoding complexity. Besides, the method performs maximum-likelihood decoding through sequential decoding by adopting a metric, so that a received signal does not have to go through a hard decision procedure.

Method for near maximum-likelihood sequential decoding

A method for BTFD decoding of signals having at least a message block of k-bit from a length candidate set S={s, s, . . . s}, wherein the k message bits are encoded by a CRC encoder and processed by an (n, l, m) convolutional encoder to generate encoded data that includes decoding a received frame to form a decoded sequence that includes an s-bit message and an error correcting code, calculating a &#x3b4;(s) value, comparing &#x3b4;(s) with a threshold value, repeating the decoding and calculating steps if &#x3b4;(s) is greater than the threshold, and updating the threshold to be &#x3b4;(s) if &#x3b4;(s) is less than or equal to the threshold.

System and method for blind transport format detection with cyclic redundancy check

A method and apparatus having a modified Reed-Solomon decoder is used for finding a specific code group used by a base station and the frame timing synchronization with the base station. The modified Reed-Solomon decoder uses a standard Reed-Solomon decoder and some reliability measurements computed from the received code word symbols. If the reliability of a received symbol is too low, this symbol is considered as erasure. By selecting code word symbols with higher reliabilities and erasing code word symbols with lower reliabilities, the symbol error probability is reduced and the performance is improved. Several modified Reed-Solomon decoders and a few decoding strategies are introduced in order to decode the received code word sequences with a power- and memory-effective method.

Method and apparatus for code group identification and frame synchronization by use of Reed-Solomon decoder and reliability measurement for UMTS W-CDMA

A decoder suitable for use in a digital communications system utilizing an RS(n', k&#x2032;) code modified from an RS(n, k) code receives n&#x2032;-symbol vectors each including k&#x2032; message symbols and r&#x2032;=n&#x2032;&#x2212;k&#x2032; parity symbols and decodes the n&#x2032;-symbol vectors to correct errors therein, wherein n, k, n&#x2032;, and k&#x2032; are integers, and k&#x2032;&#x3c;n&#x2032;&#x3c;n, k&#x2032;&#x3c;k&#x3c;n, and wherein the decoder stores therein one erasure locator polynomial &#x3c3;(x). The decoder includes a syndrome calculator for receiving the n&#x2032;-symbol vectors and for calculating syndromes of each n&#x2032;-symbol vector, wherein the i-th syndrome Sof one n&#x2032;-symbol vector R&#x2032;, (r, r, . . . , r), is S=R(&#x3b1;) for i=0, 1, . . . , n&#x2212;k&#x2212;1, wherein R(x)=rx+rx+ . . . +r, and means for finding the locations and values of the errors in each n&#x2032;-symbol vector using the syndromes thereof and the one erasure locator polynomial &#x3c3;(x).

High speed hardware implementation of modified Reed-Solomon decoder

A communications system including a base station and a mobile unit wherein a size of information bits is negotiated between the base station and the mobile unit, an encoder encoding the information bits according to Reed-Muller codes, and a permuter permuting the encoded information bits. The information bits are transmitted between the base station and the mobile unit with the negotiated size. The communications system according to the present invention further comprises a depermuter depermuting the transmitted information bits, a transformer transforming the depermuted information bits with a reduced order determined according to the negotiated size, and a maximum likelihood (ML) decoder decoding the transmitted information bits.

Error correction and decoding method and system for wideband code division multiple access

In a method for a variable-length communications system including encoding a message and decoding a data bit stream, the message includes a plurality of message blocks. A message block of the message is encoded by generating a parity check bit stream, flipping the parity check bit stream, appending the flipped parity check bit stream and a number of 0's to the end of the message block, and convolutionally encoding the resultant bit stream. When a data bit stream is received, a guessed message block and a guessed flipped parity check bit stream are extracted based on a guessed message block length. A parity check bit stream is generated for the guessed message block and then flipped. If the flipped parity check bit stream is the same as the guessed flipped parity check bit stream, the message block has been identified. Otherwise, the guessed message block length is increased by 1 and the above step is repeated.

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Kinmen County, Taiwan

Shin-Lin Shieh