ofdm

美 　英

• 網(wǎng)絡正交頻分復用(Orthogonal Frequency Division Multiplexing)；正交頻分復用技術；正交分頻多工

例句

Numerical results show that this algorithm can recognize the OFDM signal in a wide SNR range with a high average classification probability.

計算機數(shù)值仿真結果驗證了該算法在很寬的信噪比范圍內對OFDM具有很高的平均識別率。

For you to do engage in OFDM system simulation and related postgraduate theses, and no comprehensive simulation program provide the program.

為各位搞仿真和做OFDM系統(tǒng)相關論文的研究生，而沒有全面仿真程序的人提供本程序。

The thesis realized a prototype of a powerline OFDM communication system which can be practically used in a laboratory environment.

實現(xiàn)一個電力線正交頻分復用通信系統(tǒng)是本文工作的重點之一。

Orthogonal Frequency Division Multiplexing (OFDM) has turned out to be a popular multiple access scheme in wireless networks.

在無線網(wǎng)路中，正交分頻多工成為一項風行的多重進接方法。

In one example, a non-OFDM signal is received and is processed into an OFDM signal to produce a created OFDM signal.

在一個示例中，接收非OFDM信號并將其處理成OFDM信號以產(chǎn)生所創(chuàng)建的OFDM信號。

The computer simulation results show that this algorithm is suitable for OFDM systems with static or slew fading channel.

通過仿真結果進一步驗證了此算法在靜態(tài)和慢衰落信道中的實用性和有效性；

The invention discloses a method and a device for transmitting pilot in an orthogonal frequency division multiplexing (OFDM) system.

本發(fā)明公開了正交頻分復用系統(tǒng)中的導頻傳輸方法和裝置。

Meanwhile, wavelet transform idea is applied to this paper and a new wavelet de-noising method in OFDM channel estimation is proposed.

另外，將小波變換思想運用到OFDM信道估計中，提出一種基于小波去噪的OFDM信道估計新方法。

Here is a part about the OFDM course and the simulation, does not know is useful, counter- just right thing and everybody sharing.

這里是一部分關于OFDM的教程和仿真，不知有沒有用，反正好東西與大家共享。

Orthogonal frequency division multiplex (OFDM) is currently one of the most popular techniques for future broadband wireless communications.

正交頻分復用（OFDM）技術是未來寬帶無線通信中最流行的技術之一。

Being one of the core MIMO techniques, the space-time code technique takes a very important status in the MIMO-OFDM system.

作為MIMO核心技術之一的空時編碼技術，在MIMO-OFDM系統(tǒng)中具有極為重要的地位。

The binary data bit of OFDM is modulated on the corresponding subcarrier by PSK or QAM.

OFDM系統(tǒng)中二進制數(shù)據(jù)比特以PSK或QAM等調制方式調制到相應的子載波上。

Frequency offset tracking is one of the key technologies that affect OFDM systems' performance.

頻偏跟蹤是影響到OFDM系統(tǒng)性能的關鍵技術之一。

As a hopeful technology to be used in the physical layer of Next G, MIMO-OFDM is becoming the research focus in communication.

MIMO—OFDM作為很有希望解決下一代通信系統(tǒng)物理層方案的技術，正在成為國內外通信領域研究的熱點。

However, one of the drawbacks of OFDM is the sensitivity to synchronization error, especially to frequency offset.

然而，OFDM一個缺點就是對于同步錯誤非常敏感，特別是對于頻率偏差。

Channel Estimation technique is one of the key techniques in OFDM communication systems.

信道估計是正交頻分復用系統(tǒng)中的關鍵技術之一。

For a multiple-input-multiple-output (MIMO) OFDM system, the required complexity of the ZF and MMSE methods becomes more intractable.

在多輸入多輸出正交分頻多工系統(tǒng)中，強制歸零及最小均方差等化器所需的復雜度問題將變得更難以解決。

A channel estimation scheme for a multi-input multi-output orthogonal frequency-division multiplexing (MIMO-OFDM) system was presented.

給出了一種適于多輸入多輸出-正交頻分復用（MIMO-OFDM）系統(tǒng)的信道估計方案。

With urged demand on the digital, wideband, personal and mobile communication, OFDM has become one of the hottest topics in this field.

隨著人們對通信數(shù)字化、寬帶化、個人化、移動化的要求，OFDM正在成為移動通信中的研究熱點。

The scheme gives more accurate channel estimates without any change of the system architecture.

在不改變TDS-OFDM系統(tǒng)結構的情況下，本方案能獲得更準確的信道估計。

Orthogonal frequency division multiplexing (OFDM) systems are very sensitive to the synchronization error.

正交步分復用系統(tǒng)對同步誤差非常敏感。

While in the meantime, OFDM has its own shortcomings: its sensitivity to a frequency offset and the high peak-to-average ratio.

但是與此同時，OFDM技術自身存在著兩個主要的缺點：對頻率偏差敏感；

Orthogonal frequency division multiplexing (OFDM) modulation is an effective method for high data rate transmission.

OFDM是實現(xiàn)高速數(shù)據(jù)傳輸的一種有效手段。

The prerequisites of normal work of OFDM system are the precise time synchronization and the accurate frequency synchronization.

精確的時間同步和準確的頻率同步是OFDM系統(tǒng)正常工作的前提條件。

Channel estimation technique is one of the key techniques in OFDM systems.

信道估計是OFDM系統(tǒng)中的關鍵技術之一。

Simulations show that this is one-symbol convergence estimator with low error.

仿真表明，估計器在一個OFDM符號內收斂，且誤差較小。

As one of the key technologies of MIMO OFDM, synchronization comes to the research focus.

同步技術作為MIMOOFDM的關鍵技術之一，已經(jīng)成為當前研究的熱點。

Compared with traditional single-user OFDM systems, synchronization technology for OFDMA system are more difficult.

相對于傳統(tǒng)單用戶的OFDM系統(tǒng)，OFDMA系統(tǒng)的同步技術遇到更大的困難。

The maximum Doppler frequency shift is an important parameter which affects the performance of the OFDM system.

在OFDM系統(tǒng)中，影響其性能的一個重要參數(shù)就是最大多普勒頻移。

Therefore, the combination of MIMO and OFDM is an attractive and competitive solution for future broadband wireless systems.

因此，OFDM和MIMO技術的結合已經(jīng)成為未來寬帶無線通信領域最有吸引力的候選方案。

Thus, we study the system modeling for subcarrier allocation in the OFDM-based wireless multimedia networks.

因此，在以正交分頻多工為基礎的無線多媒體網(wǎng)路中，我們研究子載波配置的系統(tǒng)塑模。

Therefore, the accurate estimation of the channel state information is indispensable for OFDM signal detection and ICI suppression.

信道參數(shù)的估計對OFDM信號的檢測與ICI的抑制都是必不可少的。

The performance of an OFDM system in time-varying channel is analysed in this paper, and an improved receive algorithm proposed.

該文分析了在時變通道中OFDM系統(tǒng)的性能，并在此基礎上提出了一種改進的接收算法。

Secondly, the timing synchronization algorithm for OFDM systems and frequency synchronization algorithm were researched.

其次對OFDM系統(tǒng)的定時同步算法和載波頻率同步算法進行研究。

A subcarrier allocation algorithm is presented for multiuser MIMO-OFDM communication network based on maximum of the system sum capacity.

針對多用戶MIMO-OFDM通信網(wǎng)絡，提出了一種基于系統(tǒng)和容量最大化的子載波分配算法。

Multipath channel simulation of OFDM systems, including encoding, mapping, interleaving, modulation.

多徑信道下的OFDM仿真系統(tǒng)，包括編碼，映射，交織，調制。

Finally, we investigate the combination of space-time coding technique and orthogonal frequency division multiplexing (OFDM) technique.

最后詳細討論了空時編碼技術與正交頻分復用（OFDM）技術的結合。

Orthogonal Frequency Division Multiplexing (OFDM) is a preferred technique in wireless communication systems.

正交頻分復用（OFDM）技術是新一代無線通信系統(tǒng)的首選技術。

This paper is to research the effects of the RF BPF group delay characteristics on the bit error rate (BER) of the OFDM receiver.

本論文主要研究OFDM系統(tǒng)中的射頻BPF的群時延特性對OFDM接收機誤碼率的影響。

Synchronization algorithm for orthogonal frequency division multiplex (OFDM) systems is discussed.

對正交頻分復用（OFDM）系統(tǒng)的同步算法進行了研究。