Novel OFDM System Using Orthogonal Pilot Symbols with Subcarrier Index Modulation
نویسندگان
چکیده
منابع مشابه
Interpolation-based maximum likelihood channel estimation using OFDM pilot symbols
An interpolation-based maximum likelihood channel estimation scheme using OFDM pilot symbols is proposed. Instead of direction estimation of the frequency response on each subchannel, an interpolation filter is used on the pilot symbols to estimate a smaller set of coefficients that are sufficient to characterize the multipath channel. The actual frequency responses on the subchannels are then ...
متن کاملA Novel Power Distribution Scheme Combined with Adaptive Modulation Based on Subcarrier Grouping for OFDM Systems
In this paper, we propose to adapt both the modulation scheme and the transmit power in the frequency domain using a heuristic evaluation of the bit error rate (BER) for each subcarrier. The proposed method consists in ordering in terms of fading impact, grouping a certain number of subcarriers and performing local power adaptation in each subcarrier group. The subcarrier grouping is performed ...
متن کاملAdaptive Subcarrier Allocation for OFDM Relay System
This paper proposes two scheduling algorithms for subcarrier allocation of OFDM relay system, enhanced two-hop adaptive proportional fairness (E-THAPF) and user-number-dynamic two-hop adaptive proportional fairness (UND-THAPF), aiming to improve the performance of the traditional two-hop proportional fairness (THPF) scheduling algorithm. By modifying the priority of the two hops in THPF in an a...
متن کاملMultiuser MIMO-OFDM systems using subcarrier hopping
Recently space division multiple access (SDMA) assisted multiple-input–multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems invoking multiuser detection (MUD) techniques have attracted substantial research interest, which is capable of exploiting both transmitter multiplexing gain and receiver diversity gain. A new scheme referred to here as slowsubcarrierhopping (SS...
متن کاملDiversity technique for multiple input multiple output orthogonal frequency division multiplexing (MIMO- OFDM) system using a new subcarrier mapping scheme
The objective of this research is to propose a new subcarrier mapping scheme intercarrier interference self cancellation intercarrier interference self cancellation (ICI-SC) technique using data allocation in space time frequency block codes (STFBC) multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system. It aims to achieve maximum diversity order and to com...
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: Balkan Journal of Electrical and Computer Engineering
سال: 2019
ISSN: 2147-284X
DOI: 10.17694/bajece.588919