COFDM & MANET Wireless Video System Requirements and Response Guide
فهرست مطالب
Buyer’s Inquiry
Requirement Overview
Number of Cameras: multiple static IP cameras (1080ص)
نوع انتقال: multiple camera transmitter broadcasting video to multiple moving vehicles
Coverage Area: تقریبا. 25 km × 15 کیلومتر
Preferred Technology:
COFDM Broadcast System or
MANET / Mesh Radio System (مبتنی بر IP)
Input/Output Interface: شبکه محلی کابلی (IP video)
محیط زیست: فضای باز, line-of-sight and mobile use
نوع آنتن: Omni/sector as recommended by vendor
Power Requirements: ورودی DC (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.
1. Customer Requirement Summary
Basic Parameters Provided by Customer:
- انتقال از راه دور: 15 کیلومتر
- محیط زیست: فضای باز, خط دید (LOS)
- Communication Direction: دو طرفه, ویدئو + کنترل کنید
- رابط دوربین: شبکه محلی کابلی (IP video, RJ45)
- تقویت کننده قدرت: تا 20 W
- مکان استقرار: Both transmitter and receiver on the ground
- حالت انتقال: IP-based mesh (MANET)
- فرکانس کاری: 170–860 MHz COFDM
- Consent to Email: بله
Special Project Requirements:
- Multiple static 1080p IP cameras
- Video transmission to multiple moving vehicles
- Coverage area approximately 25 km × 15 کیلومتر
- Preferred technologies:
- COFDM Broadcast System, یا
- IP MANET / Mesh Radio System
- ورودی برق: 12–24 V DC
- Recommended antenna type: Omni or sector, depending on deployment
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)
- تاخیر کم: 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
- سازگار با 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
3. Additional Information Needed from Customer
To create an accurate system design and quotation, the following technical details are required:
- Do vehicles also need to transmit video/data back, or only receive?
- Total number of nodes: fixed cameras, وسایل نقلیه, command center.
- Required encryption (AES-128 or AES-256).
- Expected video bitrate per camera.
- Mounting height of fixed camera antennas and vehicle antennas.
- Preferred antenna type: omni or sector.
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.”
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