多入單出正交空時(shí)分組碼系統(tǒng)的調(diào)制識(shí)別
doi: 10.11999/JEIT140644
基金項(xiàng)目:
通信信息控制和安全重點(diǎn)實(shí)驗(yàn)室基金(9140C130304120C13064)和國(guó)家自然科學(xué)基金(61201282)資助課題
Modulation Identification for Orthogonal Space-time Block Code in Multiple Input Single Output Systems
-
摘要: 在現(xiàn)代無線通信系統(tǒng)中，采用正交空時(shí)分組碼(STBC)的多天線發(fā)射技術(shù)是提高通信速率和可靠性，并且能夠?qū)崿F(xiàn)簡(jiǎn)單譯碼的關(guān)鍵技術(shù)。該文針對(duì)瑞利信道系統(tǒng)模型，提出一種適用于多入單出正交空時(shí)分組碼(OSTBC)的調(diào)制識(shí)別算法。該算法通過對(duì)接收到的數(shù)據(jù)進(jìn)行重排，將多入單出的系統(tǒng)模型轉(zhuǎn)化為類似多入多出的系統(tǒng)模型，并且根據(jù)信源的特殊性用最大似然的思想實(shí)現(xiàn)調(diào)制類型的識(shí)別。仿真結(jié)果驗(yàn)證了所提算法的有效性。
-
關(guān)鍵詞:
- 無線通信 /
- 調(diào)制識(shí)別 /
- 多入單出 /
- 正交空時(shí)分組碼
Abstract: In modern wireless communication systems, multiple-antenna-transmitting in association with Orthogonal Space-Time Block Code (OSTBC) is a key technology to improve communication rate, reliability, and decoding complexity. In this paper, a modulation identification algorithm is proposed which is well suitable for the Multiple Input Single Output (MISO)-OSTBC system. First, the MISO system is transformed into a Multiple Input Multiple Output (MIMO) system by reshaping the received data. Then, maximum likelihood based approach is used to identify the modulation. Simulations validate the effectiveness of the proposed algorithm. -
計(jì)量
- 文章訪問數(shù): 1909
- HTML全文瀏覽量: 118
- PDF下載量: 594
- 被引次數(shù): 0
下載:
