公开(公告)号：GB2472906A

公开(公告)日：2011-02-23

申请号：GB201013549

申请日：2010-08-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： CHANG KYUNG HI ,  MOHAISEN MANAR ,  AN HONG SUN ,  BAEK YOUNG SEOK ,  KOO BON TAE

IPC: H04L25/03 ,  H04L25/02

Abstract: In a multiple-input multiple-output (MIMO) receiver employing channel estimation 10 and the `adaptive QR-decomposition with M' (AQRDM) algorithm 20, complexity is reduced when the number of transmitting antennas is large by grouping constellation sets 40 and dividing the tree search into partial detection phases (PDPs) 50, thus cutting the number of remaining branches at each detection point. Each of the G subsets Ai of constellation set E2 have the same cardinality (number of set elements) and can be grouped continuously (see fig. for 16QAM with G1=4) or dispersively (fig. 2B for 16QAM with G2=4). For each symbol, the minimum accumulated distance per PDP is calculated, and nodes for which this exceeds threshold (fig 3B) are removed in order to simplify the decision process.

公开(公告)号：GB2472906B

公开(公告)日：2012-03-14

申请号：GB201013549

申请日：2010-08-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： CHANG KYUNG HI ,  MOHAISEN MANAR ,  AN HONG SUN ,  BAEK YOUNG SEOK ,  KOO BON TAE

IPC: H04L25/03 ,  H04L25/02

Abstract: There is provided a signal detecting method using constellation set grouping in a spatial multiplexing multiple input multiple output system. The signal detecting method includes dividing a set of candidate symbols, a constellation set into a plurality of subsets by grouping the constellation set; dividing a tree search process of a QR-decomposition with M-algorithm (QRDM) algorithm into a plurality of partial detection phases; and performing the plurality of divided partial detection phases in parallel or iteratively.

公开(公告)号：KR20070101513A

公开(公告)日：2007-10-17

申请号：KR20060032627

申请日：2006-04-11

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LIM IN GI ,  PARK HYUNG IL ,  BAEK YOUNG SEOK ,  KIM HYUK ,  KIM TAE JOON ,  KIM KYUNG SOO ,  EO IK SOO ,  JUNG HEE BUM

IPC: H04L27/26 ,  H04L7/00

CPC classification number: H04L27/2662 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0071 ,  H04L5/06 ,  H04L27/2657

Abstract: A modulation device, a demodulation device and a wireless modem are provided to reduce power consumption during an active mode by disconnecting a driving clock during a standby period. A wireless modem includes a wireless core module(60), a modulator(10), a demodulator(20), a synchronizer(30), and a clock controller(40). The wireless core module transmits and receives wireless signals. The modulator converts data to be transmitted into the wireless signal and delivers the wireless signal to the wireless core module. The demodulator converts the signal from the wireless core module to reception data. The synchronizer adjusts a synchronization of the signal from the wireless core module. The clock controller generates driving clocks for the modulator, demodulator, and the synchronizer.

Abstract translation: 提供调制装置，解调装置和无线调制解调器以通过在待机期间断开驱动时钟来在活动模式期间降低功耗。 无线调制解调器包括无线核心模块（60），调制器​​（10），解调器（20），同步器（30）和时钟控制器（40）。 无线核心模块发送和接收无线信号。 调制器将要传输的数据转换成无线信号，并将无线信号传送到无线核心模块。 解调器将来自无线核心模块的信号转换为接收数据。 同步器调整来自无线核心模块的信号的同步。 时钟控制器产生调制器，解调器和同步器的驱动时钟。