公开(公告)号：US20080298225A1

公开(公告)日：2008-12-04

申请号：US12096520

申请日：2006-12-04

申请人： Jong-Ee Oh ,  Dong-Seung Kwon

发明人： Jong-Ee Oh ,  Dong-Seung Kwon

IPC分类号： H04J11/00

CPC分类号： H04L1/0668 ,  H04L1/0625 ,  H04L1/0631 ,  H04L25/067 ,  H04L27/2647 ,  H04L2025/03458

摘要： A transmitting apparatus and receiving apparatus of a multi-carrier system using multiple antennas is proposed. An LCF encoder of the transmitting apparatus performs a liner precoding to input signals to be transmitted to a receiving apparatus using a liner complex matrix considering the number of multiple antennas and the number of subcarriers, and a subcarrier allocator respectively allocates a subcarrier to the signals liner-precoded by the LCF encoder. A transmitter respectively transmits the signals having a subcarrier allocated by the subcarrier allocator through the multiple antennas externally. A subcarrier de-allocator of a receiving apparatus extracts a liner-precoded signal by de-allocating a subcarrier allocated to the received signal. An LCF decoder outputs a bit reliability of the received signal to the liner-precoded signal extracted from the subcarrier de-allocator considering the number m of multiple antennas and the number n of subcarriers. A performance may be improved by using space diversity due to multiple antennas and a frequency diversity due to the OFDMA system, and a complexity may be reduced and a hard decision value of a performance similar to the maximum likelihood detection may be obtained by using a lattice reduction and a 2-branch Chase decoder.

摘要翻译： 提出了使用多个天线的多载波系统的发送装置和接收装置。 发送装置的LCF编码器利用考虑了多个天线的数量和子载波的数量的线性复数矩阵来执行线性预编码以输入要发送到接收装置的信号，并且子载波分配器分别将子载波分配给信号线路 由LCF编码器重新编码。 发射机分别通过外部的多个天线发送具有由子载波分配器分配的子载波的信号。 接收装置的副载波去分配器通过对分配给接收信号的子载波进行去分配来提取线路预编码信号。 考虑到多个天线的数量m和子载波的数量n，LCF解码器输出从子载波去分配器提取的线路预编码信号的接收信号的位可靠性。 可以通过使用由于多个天线的空间分集和由于OFDMA系统引起的频率分集来提高性能，并且可以减少复杂度，并且可以通过使用格子获得与最大似然检测类似的性能的硬判决值 还原和2分支Chase解码器。

公开(公告)号：US20080225895A1

公开(公告)日：2008-09-18

申请号：US12064424

申请日：2006-08-22

申请人： Seung-Joon Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon

发明人： Seung-Joon Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon

IPC分类号： H04J1/02

CPC分类号： H04L5/0016 ,  H04L27/2602

摘要： A signal generation apparatus and signal receiving apparatus according to an Interleaved Frequency Division Multiple Access scheme is provided. The signal generation apparatus generates a plurality of complex symbols by digital-modulating a plurality of data symbols, and rotates the generated plurality of complex symbols in a plurality of each different phase angles. The signal generation apparatus generates a plurality of transmission symbols by repeating a plurality of rotated complex symbols at predetermined times, and rotating the repeatedly generated plurality of transmission chips in phase angles of an orthogonal phase sequence for the respective users. When the signal receiving apparatus receives the plurality of transmission symbols generated as described above, the maximum diversity gain may be obtained.

摘要翻译： 提供了根据交错频分多址方案的信号发生装置和信号接收装置。 信号生成装置通过对多个数据符号进行数字调制来生成多个复数符号，并且以多个不同的相位角旋转生成的多个复数符号。 信号产生装置通过在预定时间重复多个旋转的复数符号来产生多个发送符号，并且使各个用户以相位相位相位的角度旋转重复产生的多个发送码片。 当信号接收装置接收到如上所述生成的多个传输符号时，可以获得最大分集增益。