In this paper, an equivalent model for the hybrid automatic retransmission request (HARQ) multi-input multi-output (MIMO) systems with a proper combining scheme is first introduced. Based on this effective model, we present a simple technique, termed antenna permutation scheme (APS), which permutates the transmit antennas at each retransmission to improve the diversity gain from retransmissions...

This paper compares two Hybrid Automatic Repeat Request (HARQ) schemes using Incremental Redundancy (IR) which have been proposed for the UMTS (W-CDMA) High Speed Downlink Shared Channel (HSDSCH). Their relative throughput performance is reported for various channel conditions. It is shown that the twostage rate-matching scheme has marginally worse performance compared to the alternative scheme...

In this paper, we propose an iterative minimum mean square error detection with interference cancellation (MMSED-IC) for frequency-domain filtered single carrier (SC)-frequency-division multipleaccess (FDMA) uplink transmission. The use of a square-root Nyquist transmit filter reduces the peak-to-average power ratio (PAPR) while increases the frequency-diversity gain. However, if carrier-freque...

In this letter, we propose a symbol-wise puncturing scheme to support hybrid automatic repeat request (HARQ) integrated probabilistic amplitude shaping (PAS). To prevent the probability distribution distortion caused by traditional sequential and realize promised gain of PAS, perform on label sequence shaped modulation symbols. Our simulation results indicate that proposed achieves stable acros...

あらまし 複数受信ブロックにわたるサイズのウィナーフィルタをスライディングさせながらチャネル推定を 行う,パイロットとウィナーフィルタを用いるシングルキャリア繰り返しチャネル推定は,精度良く自己相関関数 を推定でき,十分長いサイズのウィナーフィルタよりも演算量を抑えながら,チャネル変動への高い追従能力を有 している.パイロットには重畳型と時間多重型の 2 つがある.本論文では,重畳型パイロットとウィナーフィルタ を用いる繰り返しチャネル推定(SI-PACE)に重点を置きながら,それと時間多重パイロットとウィナーフィルタを用 いるチャネル推定(TM-PACE)をシングルキャリアハイブリッド自動再送要求(SC HARQ)に適用した時のスループッ ト特性を計算機シミュレーションで求め,SI-PACE と TM-PACE とを比較している. キーワード 重畳型パイロット,ウィナーフィルタ,自...