首页>
外国专利>
Interleaving and parsing for MIMO-OFDM systems
Interleaving and parsing for MIMO-OFDM systems
展开▼
机译:MIMO-OFDM系统的交织和解析
展开▼
页面导航
摘要
著录项
相似文献
摘要
A wireless bit-interleaved coded OFDM (BI-COFDM) multiple-in-multiple-out (MIMO) system that improves the diversity seen by a convolutional decoder. The bit stream is interleaved first, then bits are mapped into symbols and then symbols are parsed into Nt separate streams, where t is the number of transmitters. A deinterleaver then performs the inverse permutation before sending the symbols to a Viturbi decoder. In another embodiment, a transmitting side bit-interleaver transforms an encoded and punctured bit stream using a first permutation, groups the transformed bit stream according to a desired constellation on one of Nt antennae, splits the transformed bit stream into separate streams accordingly and bit-interleaves/symbol-maps using a plurality of bit-interleavers/symbol-mappers to permute each stream using a second permutation. A receiving side performs the inverse operations of the transmitting side.
展开▼
机译:一种无线比特交织编码OFDM(BI-COFDM)多进多出(MIMO)系统,可改善卷积解码器看到的分集。首先对比特流进行交织,然后将比特映射到符号中,然后将符号解析为N t Sub>个独立的流,其中t是发射器的数量。然后,解交织器在将符号发送到Viturbi解码器之前执行逆置换。在另一个实施例中,发送侧比特交织器使用第一置换来对编码和打孔的比特流进行变换,根据所期望的星座图在N t Sub>个天线之一上对变换后的比特流进行分组,对变换后的比特进行分割。然后,使用多个比特交织器/符号映射器将比特流分成单独的流,并使用多个比特交织器/符号映射器进行比特交织/符号映射,以使用第二置换来排列每个流。接收方执行发送方的相反操作。
展开▼