COFDM and MANET Wireless Video System Requirements Guide

COFDM & MANET Wireless Video System Requirements and Response Guide

Buyer’s Inquiry

Requirement Overview

Number of Cameras: multiple static IP cameras (1080p)

傳動方式: multiple camera transmitter broadcasting video to multiple moving vehicles

Coverage Area: 大約. 25 km × 15 千米

Preferred Technology:

COFDM Broadcast System or

馬奈特 / Mesh Radio System (基於IP)

Input/Output Interface: 以太網絡 (IP video)

環境: 戶外的, line-of-sight and mobile use

天線類型: Omni/sector as recommended by vendor

Power Requirements: 直流輸入 (12–24 V)

This document provides a structured summary of the customer’s technical requirements and a recommended response outlining suitable solutions for long-range IP video transmission using COFDM or MANET mesh technology.

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1. Customer Requirement Summary

Basic Parameters Provided by Customer:

• 傳輸距離: 15 千米
• 環境: 戶外的, Line of Sight (LOS)
• Communication Direction: 雙向, 影片 + 控制
• 相機介面: 以太網絡 (IP video, RJ45)
• Power Amplifier: 最多 20 W¯¯
• Deployment Location: Both transmitter and receiver on the ground
• 傳輸方式: IP-based mesh (馬奈特)
• 工作頻率: 170–860 MHz COFDM
• Consent to Email: 是

Special Project Requirements:

• Multiple static 1080p IP cameras
• Video transmission to multiple moving vehicles
• Coverage area approximately 25 km × 15 千米
• Preferred technologies:
  • COFDM Broadcast System, 或者
  • IP MANET / Mesh Radio System
• 電源輸入: 12–24 V DC
• Recommended antenna type: Omni or sector, depending on deployment

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2. Recommended Technical Solutions

Based on the customer’s scenario and application, two main wireless solutions are appropriate.

Option A — MANET / Mesh Radio System (Recommended for mobility)

• Self-forming and self-healing mesh
• Ideal for multi-node, mobile environments
• Each vehicle acts as a relay node
• Effective over large outdoor areas
• Strong support for multiple 1080p IP streams
• Operates within 170–860 MHz for long-range coverage
• Supports high-power PA (10–20 W)
• Low latency: 25–35 ms

Option B — COFDM Broadcast System (Recommended for one-way broadcast)

• Best for one transmitter → multiple receivers
• Stable long-distance LOS transmission
• Supports Ethernet IP video
• 相容於 20 W PA for extended range
• Lower cost compared to MANET
• Suitable when only downlink video is required
• Not ideal if vehicles must also send data back

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3. Additional Information Needed from Customer

To create an accurate system design and quotation, the following technical details are required:

1. Do vehicles also need to transmit video/data back, or only receive?
2. Total number of nodes: fixed cameras, 車輛, command center.
3. Required encryption (AES-128 or AES-256).
4. Expected video bitrate per camera.
5. Mounting height of fixed camera antennas and vehicle antennas.
6. Preferred antenna type: omni or sector.

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4. Response Template to Customer

Below is the polished reply recommended for communication:

“Thank you for sharing the detailed requirements. Based on your project needs—multiple static IP cameras transmitting over a 25 × 15 km outdoor LOS area to multiple moving vehicles—we propose either a MANET mesh solution for fully bi-directional mobile networks, or a COFDM broadcast solution for long-range one-way video. To finalize the system design, could you please confirm the number of nodes, return link requirements, encryption level, expected bitrate, and antenna installation height? We will then prepare a full network design, equipment list, pricing, and lead time.”