In this paper, we present a prototype transmitter and receiver with set partitioning (SP)-64 amplitude and phase shift keying (APSK) coded modulation we developed for expanding satellite transmission capacity. SP-multi-level coded modulation is a transmission scheme that can improve noise immunity by properly combining a modulation scheme, bit allocation, and error-correction codes. We designed SP-64APSK coded modulation on the basis of channel capacity for expanding satellite transmission capacity. We confirmed that it has higher robustness to additive white Gaussian noise (AWGN) than DVB-S2X’s 64APSK modulation with Gray mapping through computer simulation. We also developed a prototype transmitter and receiver to implement our SP-64APSK coded modulation and evaluated its transmission performances in an AWGN channel and in a non-linear channel simulating 12-GHz-band satellite transponder characteristics. We describe the method of designing our SP-64APSK coded modulation through computer simulation, the modulation/demodulation process, and transmission performances of the prototype transmitter and receiver. We also indicate that 8K ultra-high definition television (UHDTV) with an encoded bit rate of 150 Mbps can be transmitted using the prototype within 34.5 MHz, which is the bandwidth of a single transponder for satellite broadcasting in Japan.

中文翻译：

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基于信道容量设计的集划分64APSK编码调制发射机和接收机的研制

在本文中，我们展示了一个原型发射器和接收器，该发射器和接收器具有我们为扩展卫星传输容量而开发的集分割 (SP)-64 幅度和相移键控 (APSK) 编码调制。SP-多级编码调制是一种可以通过适当地组合调制方案、比特分配和纠错码来提高抗噪性的传输方案。我们在信道容量的基础上设计了SP-64APSK编码调制，用于扩展卫星传输容量。我们通过计算机模拟证实，它对加性高斯白噪声 (AWGN) 的鲁棒性高于 DVB-S2X 的带有灰度映射的 64APSK 调制。我们还开发了一个原型发射器和接收器来实现我们的 SP-64APSK 编码调制，并评估了它在 AWGN 信道和模拟 12 GHz 频段卫星转发器特性的非线性信道中的传输性能。我们描述了通过计算机模拟设计我们的 SP-64APSK 编码调制的方法、调制/解调过程以及原型发射器和接收器的传输性能。我们还指出，使用该原型可以在 34.5 MHz 内传输编码比特率为 150 Mbps 的 8K 超高清电视 (UHDTV)，这是日本卫星广播单个转发器的带宽。原型发射机和接收机的调制/解调过程和传输性能。我们还指出，使用该原型可以在 34.5 MHz 内传输编码比特率为 150 Mbps 的 8K 超高清电视 (UHDTV)，这是日本卫星广播单个转发器的带宽。原型发射机和接收机的调制/解调过程和传输性能。我们还指出，使用该原型可以在 34.5 MHz 内传输编码比特率为 150 Mbps 的 8K 超高清电视 (UHDTV)，这是日本卫星广播单个转发器的带宽。