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- V-BLAST has demonstrated very high spectral efficiency, and can improve system capacity dramatically. BLAST系统有着非常高的频谱利用率，可以显著地提高系统容量。
- Simulation results show that the spectral efficiency is improved and the outage probability is decreased in the proposed joint algorithm. 仿真结果表明，本文提出的联合算法具有较高的频谱效率和较低的中断概率。
- T. Ono, “Wavelength Division Multiplexing Terabit Technologies with High Spectral Efficiency,” Optics &Photonics News, pp.56-59, Mar, 2001. 赖柏洲，光纤通信与网路技术，台北:全华科技股份有限公司，2003，第2-11-2-17页。
- The MDUPC only needs the local information to coordinate intercell interference and achieves the best tradeoff between the fairness of users and the spectral efficiency. 该算法中每个小区只需本地信息就可以协调小区间干扰，实现了用户间公平性与频谱利用率的最佳折中。
- The author has described several key techniques for improving the capacity of CDMA digital celullar system,comparing to the spectral efficiency of FDMA and TDMA cellular system. 本文对照频分多址和时分多址系统的频谱效率，阐述了码分多址系统提高系统容量的几项关键技术。
- Numerical results reveal that the joint design of AM and truncated ARQ in V-BLAST system can achieve considerable spectral efficiency gain and outage probability reduction. 数据仿真结果表明，这种联合设计可以降低V-BLAST系统的中断率，并且获得可观的频谱效率增益。
- A cooperative protocol termed as fractional incremental relaying (FIR) is firstly presented to achieve higher spectral efficiency for wireless communications. 摘要为进一步提高无线通信系统的频谱效率，提出了一种新型分数增量中继协议。
- A simple criterion using a semiblind power allocation strategy is derived for minimum BER（ bit-error rate）when the total spectral efficiency and the transmit power are constant. 考虑到实用的方面，同时也给出了一种低复杂度的近似最优快速算法。
- The peak spectral efficiency of MMSE detectors decreases as the number of transmission antennas increases and increases as the number of receiving antennas increases. 线性MMSE检测子的峰值频谱效率与发送天线数有关，随发送天线数的增加而减小，随接收天线数的增加而增大。
- Therefore, the best way to increase the network capacity throughput is to increase both the individual transmission spectral efficiency as well as the number of concurrent transmissions. 因此，提升网路传输容量最好的办法就是提高传输速度以及提高同时传送资料的基地台数量；
- A technique that has gained much interest for doubling the system capacity and spectral efficiency is the use of polarization-multiplexing (Pol-Mux) of two independent data streams. 使用偏振合并调制两个独立的光讯号流的技术，来达成双倍的光纤传输系统容量还有频谱利用率，最近得到学术研究上的关注。
- For a wireless mesh network, the network capacity throughput is determined by two factors: the individual transmission spectral efficiency and the number of concurrent transmissions. 对于无线网状网路而言，其网路传输容量由传输速度高低与同时传送资料的基地台数量这两个因素来决定。
- Modern devices have a spectral efficiency more than one trillion times greater than Marconi's original device did 112 years ago (it broadcast in Morse code over a very wide frequency range). 现代的无线通讯设备的频谱效率比112年前马可尼原始的电报机（利用莫尔斯码在很宽的频率内播送）高十亿倍。
- Thus the choice between (1) increasing the transmission spectral efficiency and (2) increasing the number of concurrent transmissions is a trade-off and is critical to the network capacity throughput. 因此对于（1）提高传输速度以及（2）增加同时传送资料的基地台数量这两个选择我们只能择其一，无法同时达到两者。
- The thesis explores a new valid multiuser detection method and a signal transmission scheme, and studies the principle of improving the spectral efficiency when multiuser detection is employed. 本文首先着眼于探索新的多用户检测方法或信号发送方案,然后从理论上进一步研究采用多用户检测方法时提高频谱效率的系统优化设计。
- Abstract: OFDM is a highly spectral efficient modulation technique.It is able to provide high data rates and reduce the intersymbol interference. 摘要： 正交频分复用是一种频谱效率很高的调制技术，它能够提供高的数据传输速率，并能够减少符号间的干扰。
- average spectral efficiency(ASE) 平均频谱效率
- We must improve our efficiency as soon as possible. 我们必须尽快地提高工作效率。
- Their labor efficiency is very high. 他们的工作效率很高。
- We were most impressed with/by your efficiency. 你的工作效率很高，我们极为钦佩。
