Peak‐to‐average power ratio reduction in Alamouti multi‐input–multi‐output orthogonal frequency division multiplexing systems without side information using phase offset based‐partial transmit sequence scheme

Generalized Space Time Block Coded Spatial Modulation for Open-Loop Massive MIMO Downlink Communication Systems

“…5-6 compare the performances of the proposed GSTBC-SM systems to those of conventional GSTBC and SSK systems at the throughput of 4 bpcu. To achieve 4 bpcu, (N t , K, M, T ) = (16,4,4,4), and (16, 2, 2, 2) are employed for Q-OSTBC-SM, Alamouti-SM [36], while (N t , K, M, T ) = (4, 4, 16, 4), and (2, 2, 16, 2) are employed for Q-OSTBC and Alamouti. Since it is difficult for OSTBC-SM and OSTBC systems to attain 4 bpcu, the performance of them are not included for comparison.…”

“…7 compares the performances of the proposed Q-OSTBC-SM systems to those of SSK-vertical bell labs spacetime (SSK-VBLAST) [47] systems having N t = 8 at the throughput of 4 bpcu. To achieve 4 bpcu, (N t , K, M, T ) = (8,4,8,4) and (8, 4, 1, 1) are employed for Q-OSTBC-SM and SSK-VBLAST systems, respectively. It is obvious that the proposed Q-OSTBC-SM system with φ = π/4 outperforms SSK-VBLAST systems by 10 dB and 20 dB at BER=10 −4 for the case of N r = 2 and N r = 1, respectively.…”

“…There are two classic categories of conventional STBC schemes, i.e., orthogonal STBC (OSTBC) [2]- [7] and quasi-orthogonal STBC (Q-OSTBC) schemes [8]- [14]. Specifically, Alamouti first proposed the OSTBC scheme with N t = 2 transmit antennas (TAs) in [2], which has been widely used in mulicarrier systems [3] [4]. Then, the authors of [5]- [7] further extended the OSTBC concept into other numbers of TAs.…”

Blind SLM for PAPR reduction of Alamouti DSFBC systems

“…So far, various algorithms have been proposed to reduce the PAPR of single antenna OFDM systems such as clipping and filtering [13], selected mapping (SLM) [14, 15], tone reservation [16], constellation extension [17] and partial transmit sequences [18, 19]. Some methods were proposed to reduce the PAPR of multi‐input–multi‐output OFDM (MIMO‐OFDM) systems [20–23]. Also, in [24, 25] some methods were proposed to reduce the PAPR of differentially modulated single antenna OFDM systems.…”