In this paper, SNR and BER for SIMO communication system are calculated with different modulation techniques like 8-PSK, 16-PSK and 16-QAM for MRC and EGC combining methods.

Several diversity techniques, such as maximal-ratio combining (MRC), selection combining (SC), and equal-gain combining (EGC) are used in many wireless communication system. In MRC method, all received signals at the input of the receiver are …

MRC, EGC, SC, Alamouti Scheme can be used to provide spatial diversity in MIMO systems. MRC combines all the signals in a co-phased and weighted manner so as to have the highest achievable SNR at the receiver at all times.

2021年5月6日 · 在“衰落信道中数字带通传输系统的性能分析”中，我们注意到瑞利衰落（多径衰落）和对数正态分布（阴影衰落）会对数字带通传输系统造成很大的影响，减轻衰落的最有力的方法就是分集-合并（diversity-combining）技术。 集：经过合并接收信号的衰落就会很小。 例如选择信号最强的那根天线就是selection combining. 要求有足够多天线以覆盖到所有可能的来波方向，或者一个天线恰好对准来波方向。 Frequency diversity（频率分集）：通过不同载波频率传输同一 …

2022年4月20日 · 其主要功能就是将整个带宽分为多个频率互不重叠的子信道，然后单独对每个信号进行独立的调制。 这种技术的特点是频率上的互不重叠从而防止了信道间干扰，但这降低了频谱利用率，浪费了大量的带宽资源。 针对这个问题，为了提高频谱的利用率，可以考虑将频谱进行重叠，但是为了防止互相干扰，必须让每个子信道之间是正交的。 从而发展处了OFDM技术，这就是多载波调制技术，即OFDM技术。 在OFDM中，整个带宽被分为N个正交子载波，每一个子载 …

In this paper, we derive exact closed-form expressions for the average bit error rate (BER) and outage probability (P out) for differential equal gain combining (EGC) in cooperative diversity networks. The considered network uses amplify-and-forward relaying over independent non-identical Nakagami-m fading channels.

2023年4月14日 · 最大比合并（Maximal Ratio Combining，MRC）是分集合并技术中的最优选择，相对于选择合并和等增益合并可以获得最好的性能，其性能提升是由阵列增益（ 阵列增益即发射的信号的功率增益，是通过发送机和/或接收机的多个天线而实现功率增益的，一般在LTE中，增加一个天线会有3db的增益）带来的更高的信噪比，进而带来更好的误码率特性。 最大比合并的实现方式是通过给分集的N路不同信号乘上一个不同的系数 ，而系数的确定与N路分支的衰落系数 …

2008年9月19日 · In this post, we will discuss equal gain combining (EGC). For the discussion, we will assume that the channel is a flat fading Rayleigh multipath channel and the modulation is BPSK.

2018年7月20日 · 该博客探讨了瑞利衰落信道对误码率的影响，通过仿真比较了选择式合并（SC）、等增益合并（EGC）和最大值合并（MRC）在不同分集数量下的性能。

Various techniques are known to combine the signals from multiple diversity branches. In Equal Gain Combining, each signal branch weighted with the same factor, irrespective of the signal amplitude. However, co-phasing of all signal is needed to avoid signal cancellation. Figure: L- branch antenna diversity receiver (L = 5).

2017年8月1日 · In this work, we derive the closed-form expressions of channel capacity with maximal ratio combining, equal gain combining and selection combining schemes under different transmission policies such as optimal power and rate adaptation, optimal rate adaptation, channel inversion with fixed rate (CIFR) and truncated CIFR.

2016年5月1日 · A simple optimal error analysis of multiple-branch equal gain combining (EGC) and selection combining (SC) in the presence of arbitrarily correlated Rayleigh fading channels is presented.

In this paper, we analyze the performance of Equal Gain Combining (EGC) over the recently proposed Fluctuating Two-Ray (FTR) channel model, with applications to millimeter-wave (mmWave) communications.

2019年3月15日 · The algorithms are equal gain combining (EGC), selective combining (SC) and max-ratio combining (MRC). We compare the performance of the three combining algorithms in three aspects, which are the SNR of the locating signal, the SNR of the recovered vibration signal and the computation cost of the algorithms.

昨天晚上受朋友之托计算 心电图 （ECG）的 信噪比 （SNR），为了避免以后忘记，特此记录一下。 计算SNR由 Matlab 进行实现. 共有多组数据在Excel表格中，首先将Excel文件导入与Matlab程序同一级文件夹中调用Excel数据。 因为ECG数据存在 基线漂移 问题，会导致计算出的信噪比过高，所以需要将基线漂移归0. 消除基线漂移的效果如图所示. Wavesignal_1即为新数据，对新数据计算SNR。 选用40Hz作为截止频率进行 低通滤波，获得了过滤掉噪音的数据。 随后分别计算 …

We study the performance of -branch equal-gain combining (EGC) and maximal-ratio combining (MRC) receivers operating over nonidentical Weibull-fading channels. Closed-form expressions are derived for the moments of the signal-to-noise ratio (SNR) at

2023年3月31日 · EGC is a simple and effective technique for improving the SNR and reliability of wireless communication systems in environments with fading channels. By combining multiple received signals with equal weighting factors, EGC can help to mitigate the effects of fading and improve the overall quality of the received signal.

其主要功能就是将整个带宽分为多个频率互不重叠的子信道，然后单独对每个信号进行独立的调制。 这种技术的特点是频率上的互不重叠从而防止了信道间干扰，但这降低了频谱利用率，浪费了大量的带宽资源。 针对这个问题，为了提高频谱的利用率，可以考虑将频谱进行重叠，但是为了防止互相干扰，必须让每个子信道之间是正交的。 从而发展处了OFDM技术，这就是多载波调制技术，即OFDM技术。 在OFDM中，整个带宽被分为N个正交子载波，每一个子载波的数据传输波 …

There are different antenna gain-combining methods. They are as follows. 1. Equal gain combining (EGC) 2. Maximum ratio combining (MRC) 3. Selective combining (SC) 4. Root mean square gain combining (RMSGC) 1. Equal gain combining method We add the correlated data streams from different antennas in the equal gain combining method.

In this paper, important statistical parameters, such as the k-moment and the k-central moment, of the output signal-to-noise ratio (SNR), in predetection equal-gain combining (EGC) systems operating over correlated Nakagami-m fading channels are studied. Simple closed-form expressions for the mean and variance of the output SNR are presented.