Wideband Frequency-Domain and Space-Domain Pattern Reconfigurable Circular Antenna Array

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Frequency-domain Adaptive Antenna Array for Single-carrier Uplink Transmission Using Frequency- Domain Equalization

The bit error rate (BER) performance of single-carrier (SC) block transmission in a frequency-selective fading channel can be significantly improved by the use of frequency-domain equalization (FDE). However, in multi-cell environment, the BER performance is degraded due to co-channel interference. Adaptive antenna array (AAA) is effective to suppress the cochannel interference. In this paper, ...

متن کامل

Digitally Excited Reconfigurable Linear Antenna Array Using Swarm Optimization Algorithms

This paper describes the synthesis of digitally excited pencil/flat top dual beams simultaneously in a linear antenna array constructed of isotropic elements. The objective is to generate a pencil/flat top beam pair using the excitations generated by the evolutionary algorithms. Both the beams share common variable discrete amplitude excitations and differ in variable discrete phase excitations...

متن کامل

Frequency-Domain Adaptive Antenna Array for Multi-Code MC-CDMA

MC-CDMA is an attractive multi-access method for the next generation high-speed mobile communication systems. The uplink transmission performance is limited by the multi-access interference (MAI) from other users since all users share the same bandwidth. Adaptive antenna array can be used to suppress the MAI and to improve the uplink transmission performance. In this paper, we propose a frequen...

متن کامل

Frequency Domain Adaptive Antenna Array for Single-Carrier Uplink Transmission

In this study, we present a single-carrier frequency domain adaptive antenna array (SC-FDAAA) scheme for the uplink transmission and apply the SC-FDAAA scheme to single cell and cellular distributed antenna network (DAN) as well. It is shown by simulation results that the SC-FDAAA scheme can effectively suppress the interfering signals in a severely frequency selective fading channel both in th...

متن کامل

OFDM adaptive antenna array with frequency-domain weight updating and delay time-domain channel estimation

あらまし 適応アンテナアレーはマルチアクセス干渉を抑圧できるので,移動通信における上りリンク容量を向上できる技 術として期待されている.OFDM 適応アンテナアレーは Pre-FFT 型と Post-FFT 型に分類される.Pre-FFT 型は受信サンプリ ング毎に更新可能であるため,アレー重みの高速収束が可能であることが知られている.一方筆者らは,Post-FFT 型におい ても,各サブキャリアにおいて同一のアレー重みを用いる周波数領域更新 OFDM 適応アンテナアレーであれば,1OFDM シ ンボル当たりサブキャリア数回の更新が可能となるため,高速収束が可能であることを理想チャネル推定時において示してき た.しかしながら提案方式には参照信号生成にチャネル情報が必要であり,チャネル推定精度が BER 特性に大きな影響を 与えると考えられる.本論文では遅延時間領域チャネル推定を用い,...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: IEEE Transactions on Antennas and Propagation

سال: 2017

ISSN: 0018-926X,1558-2221

DOI: 10.1109/tap.2017.2740969