Beamspace Modulation for Near Field Capacity Improvement in XL-MIMO Communications
نویسندگان
چکیده
The spatial degrees of freedom (DoFs) greatly increase in the near-field region millimeter wave or terahertz multiple-input multiple-output communications with extremely large antenna arrays (XL-MIMO). To employ increased DoFs, a beamspace modulation (BM) strategy is introduced to near field XL-MIMO. BM can work fixed small number RF chains. It exploits DoFs as resources for capacity improvements. achievable spectral efficiency and its asymptotic are analyzed. Both theoretical simulation results show that proposed considerably outperforms existing benchmark only selects best data transmission terms efficiency.
منابع مشابه
Modulation Recognition for MIMO Communications
A large amount of modulation recognition algorithms has been reported in literature for Single-Input Single-Output (SISO) communications. But, to our knowledge, none of them have dealt with Multiple-Input Multiple-Output (MIMO) communications. The issue addressed in this paper is the modulation recognition for MIMO communications under the assumption of a perfect symbol timing. In the first par...
متن کاملInvestigation of Capacity Bounds for Mimo System for Wireless Communications
MIMO systems are used in wireless communications for enhancement of capacity. The number of transmit and receive antennas effect the tradeoff between performance gain and that of multiplexing gain. In this paper we are considering the study of Rayleigh fading affecting the capacity of MIMO channel by mat lab simulation. The Singular Value Decomposition (SVD) has been used to explore further ins...
متن کاملCapacity and Performance of MIMO systems for Wireless Communications
This paper presents the capacity performance of multiple antennas for wireless communication systems. Multiple antennas structures can be classified into single-input multiple-outputs (SIMO), multiple-inputs single output (MISO), and multiple-inputs multiple-outputs (MIMO) systems. Assuming that the channel is unknown at receiver, capacity expressions are provided for each structure. Our result...
متن کاملNoncoherent Modulation for MIMO Training and Related Capacity Analysis∗
In this paper, we deal with noncoherent communications over multi-input/multi-output (MIMO) wireless links where the fading coefficients are not available to either the transmitter or the receiver. For a Rayleigh flat block-fading channel with M transmitand N receive-antennas and a channel coherence interval of length T , it is well-known that for T À M , or, at high signal-to-noise-ratio (SNR)...
متن کاملBER and Channel Capacity Improvement of MIMO-OFDM and Adaptive MIMO- OFDM System By Modulation Technique(QAM)
Abstract— In the present scenario, with the growing demand for wireless communication in today’s life, along with the parallel rapid growth of digital communication technology, new innovative ideas are coming into existence which needs to be implemented. The main need of any communication system is , basically high speeds of data transmission with higher accuracy and reliability. (Orthogonal Fr...
متن کاملذخیره 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 Wireless Communications Letters
سال: 2023
ISSN: ['2162-2337', '2162-2345']
DOI: https://doi.org/10.1109/lwc.2023.3277666