公开(公告)号：US20160020881A1

公开(公告)日：2016-01-21

申请号：US14868877

申请日：2015-09-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mihail PETROV ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC: H04L5/00 ,  H04B7/06 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04B7/02 ,  H04B7/0613 ,  H04L25/0224 ,  H04L27/2611 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2649

Abstract: The present invention relates to orthogonal frequency-division multiplexing (OFDM) communication systems with four transmit antennas and one or more receive antennas, and in particular to methods for inserting scattered pilots (SPs) into the transmit signals of such OFDM systems, for estimating channel properties on the basis of the scattered pilots, a multi-antenna OFDM transmitter, and an OFDM receiver. In this context, it is the particular approach of the present invention to keep the same SP pattern like in the single-transmitter case, to partition the pilots into as many subsets as there are transmitters (transmit antennas), and to interleave these subsets both in time and in frequency. In this manner, the granularity of pilots of the same subset is reduced. This offers increased flexibility in designing the scattered pilot patterns and greater accuracy of the estimated channel properties.

Abstract translation: 本发明涉及具有四个发射天线和一个或多个接收天线的正交频分复用（OFDM）通信系统，特别涉及用于将散射导频（SP）插入到这种OFDM系统的发射信号中的方法，用于估计信道 基于散射导频的属性，多天线OFDM发射机和OFDM接收机。 在这种情况下，本发明的特定方法是在单发射机情况下保持相同的SP模式，以将导频划分成与发射机（发射天线）一样多的子集，并且将这些子集两者交织 在时间和频率上。 以这种方式，减少了相同子集的导频的粒度。 这提供了设计分散导频模式和估计信道特性的更高精度的更大灵活性。

公开(公告)号：US20160037192A1

公开(公告)日：2016-02-04

申请号：US14847361

申请日：2015-09-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mihail PETROV ,  Frank HERRMANN ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC: H04N21/236 ,  H04L29/06 ,  H04N21/4385 ,  H04N21/434 ,  H04N21/61 ,  H04N21/2389

CPC classification number: H04N21/23608 ,  H04L49/9057 ,  H04L49/9094 ,  H04L69/04 ,  H04L69/22 ,  H04N21/2389 ,  H04N21/4344 ,  H04N21/4385 ,  H04N21/6112

Abstract: A demultiplexer 630 routes only one or more transport stream packets with a single packet identifier value to each physical layer pipe. A header compression unit 620 replaces the packet identifier of the transport stream packet with a short packet identifier of one bit length indicating at least whether the transport stream packet is a NULL packet.

Abstract translation: 解复用器630仅将具有单个分组标识符值的一个或多个传输流分组路由到每个物理层管道。 报头压缩单元620用至少指示传输流分组是否为空分组的一比特长度的短分组标识来替换传输流分组的分组标识符。