Improved Space Time Block Coding Diversity Technique for Rayleigh Fading Channel in Wireless Systems
نویسندگان
چکیده
Numerous diversity techniques are used to minimize BER in wireless systems. But, the most effective diversity technique is Space Diversity. Space diversity is utilization of Multiple antenna systems (Multiple Input, Multiple Output MIMO), which gives a significant enhancement to data rate and channel capacity. Multiple antenna technology can also be used to increase the data rate (spatial multiplexing) instead of improving robustness. Space Diversity is used to overcome the effect of fading .In this paper, Receive diversity is used i.e. using single antenna at Transmitter side and multiple antennas at Receiver side. So, the impact of MIMO system over different modulation technique is analyzed and the performance of the system is evaluated as Bit Error Ratio.
منابع مشابه
A Blind Hammerstein Diversity Combining Technique for Flat Fading Channels
Diversity combining techniques play an important role in combating the destructive effects of channel fading in wireless communication systems. In this work we present a blind diversity combining technique for Rayleigh flat fading channels based on Hammerstein type filters. We show that the performance of this technique is very close to ideal MRC system which is accepted as an optimum receiver ...
متن کاملSingle-Carrier Frequency-Domain Equalization for Orthogonal STBC over Frequency-Selective MIMO-PLC channels
In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...
متن کاملPerformance Analysis of Selective Combining Diversity over Rayleigh Fading Channel in Wireless Communication
In this paper, we use the selective combining diversity over Rayleigh fading channel is presented. Different diversity techniques are available in the literature. Different techniques behave differently with different coding techniques. Here, diversity analysis of the Rayleigh fading channel is presented in Space time block codes (STBC). We are using the system model of the space time block cod...
متن کاملImplementation of Space-Time Block Coding (STBC) Using 2 Transmit and 2 Receive Antennas
MIMO wireless technology has grown in the last few years. MIMO technology was mainly used for the analysis of channel capacity and also lead to the research for MIMO channel model, Space-Time coding. A signaling technique called Space-Time coding uses the MIMO structure to improve the robustness of communication link. Space–time block codes are designed to achieve the maximum diversity order fo...
متن کاملPerformance Analysis of MIMO-OFDM for 4G Wireless Systems under Rayleigh Fading Channel
MIMO-OFDM technology is a combination of multiple-input multiple-output (MIMO) wireless technology with orthogonal frequency division multiplexing (OFDM) that has been recognized as one of the most promising techniques to support high data rate and high performance in different channel conditions. Again, Alamouti’s space time block coding scheme for MIMO system has drawn much attention in 4G wi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014