This paper describes the design and realization of the communication system OFDM modulation, demodulation of the digital circuit.
适合系统学习OFDM技术。本文设计并实现OFDM通信系统的调制、解调部分的数字电路。
Finally, the OFDM modulation system and frequency-hopping system are connected by Schematic to constitute FH-OFDM modulation system.
最后用原理图输入方式把OFDM调制系统和跳频系统两个子系统相连构成FH - OF DM混合调制系统。
When the adaptive modulation is applied in the OFDM system, there are lots of problems to be solved.
本文围绕自适应调制技术在OFDM系统中的应用涉及的技术问题展开研究。
OFDM (Orthogonal Frequency Division Multiplexing) is a new modulation technology, it is suitable to high-data-rate transmission in the wireless transfer channel with multi-path transmission.
正交频分复用(OFDM)是一种新型调制技术，特别适合在多径传播的无线移动信道中高速传输数据。
Orthogonal frequency division multiplexing (OFDM) as the representative of the multi-carrier modulation technique proved to be one of the most promising.
以正交频分复用(OFDM)为代表的多载波调制技术被证明是最有前途的方案之一。
This dissertation is concerned with channel estimation in both OFDM and MIMO-OFDM wireless communication systems and adaptive modulation in MIMO-OFDM systems.
本文研究了OFDM和MIMO-OFDM无线通信系统的信道估计技术以及MIMO-OFDM系统的自适应调制技术。
Finally, this dissertation proposes a low complexity adaptive modulation scheme for VBLAST-OFDM system.
最后，提出了一种低复杂度的VBLAST - OFDM系统自适应调制方案。
In this paper, a novel frequency ambiguity resolution algorithm in OFDM systems based on phase differential modulation between adjacent symbols is proposed to correct the frequency ambiguity.
该文针对OFDM系统频偏估计中所产生的模糊度问题提出了一种基于符号间相位差分调制的频偏估计模糊度校正算法。
The key aspect of adaptive OFDM includes accurate channel estimation and efficient adaptive modulation schemes.
准确的信道估计和高效的自适应调制方案是自适应OFDM技术的两个关键。
On the other hand, adaptive modulation technique can enhance data rate, spectrum efficiency and transmission reliability in MIMO-OFDM systems.
另一方面，对于MIMO - OFDM系统来说，自适应调制技术可以提高系统的数据传输率、频谱效率以及传输的可靠性。
As it is to OFDM, WMCM has lower time complexity in baseband modulation, good PAPR distribution, and takes on more robust to pulse interference.
与OFDM相比较，WMCM的基带调制时间复杂度降低，峰均功率比更优，对抗脉冲干扰的能力更强。
The orthogonal multicarrier modulation, which is the main character of OFDM, determines that it is very sensitive to both timing synchronization error and carrier frequency offset.
OFDM系统自身的正交多载波调制特点，决定了其对定时误差和载波频率偏差十分敏感。
Compared with the traditional scheme of single-carrier modulation, OFDM technology has more effective anti-jamming ability and achieves higher transmission rate.
与传统的单载波调制方式相比，OFDM技术可以有效地抵抗信道多径干扰，提高系统的传输速率。
OFDM is a modulation method which was often used in the channels. It has better capability against the fading and can realized parallel transmission.
正交频分复用调制（OFDM）是一种信道利用率很高的调制方式，具有良好的抗衰落能力，可实现并行传送。
But SC-FDE cannot finish adaptive modulation utilizing CSI directly like OFDM due to it has to make symbol mapping and detecting in time domain.
但由于其符号映射和检测在时域完成，因此在SC -FDE系统中利用信道状态信息来完成自适应调制，并不像OFDM那样直接。
Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier broadband modulation technique.
正交频分复用(OFDM)是一种多载波宽带数字调制技术。
As to the simple monitoring environment of single user, this paper mainly analyzed and implemented adaptive modulation in MB-OFDM-UWB system.
针对简单的单用户监测情况，分析并实现了单用户MB - OFDM - UW B自适应调制系统。
In this paper, a novel power allocation and adaptive modulation method is proposed on the basis of the combination of MIMO and OFDM technology.
本文在已知信道状态信息的前提下，将MIMO和OFDM技术相结合，提出了一种新的MIMO - OFDM系统的功率分配和自适应调制方法。
The OFDM (Orthogonal Frequency Division Multiplexing) multi-carrier modulation is used to process messages instead of the traditional single carrier modulation.
提出利用正交频分复用(OFDM)多载波调制方式代替单载波调制方式对信息进行处理。
One of the advantages of OFDM is the flexibility concerning modulation and multiple access techniques.
调制方式和多址接入的灵活性是正交频分复用（OFDM）技术的一大优点。
The adaptive power allocation algorithm and modulation scheme for adaptive OFDM systems are studied subsequently.
其次研究了自适应OFDM系统的功率分配及自适应调制算法。
Based on the principle of the OFDM technology, the multi-carriers modulation has strong abilities in counteracting the multi-path response.
根据OFDM技术的原理，多载波调制技术具有良好的抗多径效应能力。
About to build voice modulation OFDM multiple platforms, where the code is very detailed, including OFDM simulation study documents PDF.
关于语音调制的OFDM的多种平台的搭建，其中代码很详细，包括了OFDM仿真的学习文件pdf。
Thus, method may be used to effectively improve the performance of high-order modulation OFDM systems.
该方法可有效应用于提高高阶调制OFDM系统的性能。
Digital television transmission system based on the OFDM consists of Error correction processing and digital modulation parts etc.
基于OFDM的数字电视传输系统由纠错处理和数字调制等组成。
Orthogonal frequency division multiplexing (OFDM) is a new modulation method for broadband mobile communications.
正交频分复用(OFDM)是为宽带移动通信而提出的新型调制技术。
Based on OFDM system, a novel space-frequency-time code which combined trellis-coded modulation with differential space-time block code was proposed.
基于OFDM(正交频分复用)系统，提出了一种新的空频时三维编码，将网格编码调制和差分空时分组码进行组合链接设计。
Very comprehensive OFDM source code, sub module to write the m file, after extracting, running the main file, there is a modulation and demodulation, to join the cyclic prefix.
十分全面的OF D M源程序，分模块写的M文件，解压之后，运行主文件，有调制解调，加入循环前缀。功能全面。
Very comprehensive OFDM source code, sub module to write the m file, after extracting, running the main file, there is a modulation and demodulation, to join the cyclic prefix.
十分全面的OF D M源程序，分模块写的M文件，解压之后，运行主文件，有调制解调，加入循环前缀。功能全面。
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