Low complexity and high performance symbol detection scheme for uplink wide‐banded cyclic prefixed filter bank multiple access system without analysis filtering

Abstract

This Letter proposes a new symbol detection scheme for an uplink wide-banded cyclic prefixed filter bank multiple access system. The feature of the proposed scheme is that it eliminates the analysis filter bank processing that is commonly employed in the existing schemes. By leveraging a particular interleaving structure, the large matrix inversion operation is decomposed into parallel matrices inversions with small sizes. The benefits of the proposed scheme include lower complexity and higher spectral efficiency. In addition, the detection performance is also improved, which is verified by simulations.

Transmit Covariance and Waveform Optimization for Non-orthogonal CP-FBMA System

“…Then the symbol detection module recovers the transmitted symbols from y. Regarding the symbol detection scheme for non-orthogonal CP-FBMA system, the most recent work is proposed in [30], which uses iterative LMMSE estimation. To be more specific, H m and F m can be diagonalized, i.e., H m = W H N P Λ Hm W N P , F m = W H N P Λ F m W N P , where Λ Hm , Λ F m ∈ C N P ×N P are diagonal matrices whose main diagonal entries are given by the (N P )-point DFT of h m and f m , respectively.…”

“…The wide-banded design was originally proposed to reduce the filter length and complexity of symbol detection while improving PAPR and bit error ratio (BER) performance, as compared to the narrow-banded filter bank design. Related simulation results can be found in [20], [21], [30]. To further improve the system performance, we extend the wide-banded design to fullband design in this paper, i.e., each filter is allowed to cover the full available bandwidth.…”